0 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield Cheshire SK11 9DL, UK University of Manchester Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK 1 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, Nuffield Radio AstronomyLaboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 2 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire SK11 9DL, UK 3 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield SK11 9DL University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield SK11 9DL 4 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 5 Nuffield Radio Astronomy Observatory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR, UK Nuffield Radio Astronomy Observatory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR, UK 6 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK 7 Nuffield Radio Astronomy Laboratory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR Nuffield Radio Astronomy Laboratory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR 8 Science and Engineering Research Council, Rutherford and Appleton Laboratories, Didcot, Oxon, England Science and Engineering Research Council, Rutherford and Appleton Laboratories, Didcot, Oxon, England 9 Science and Engineering Research Council, Rutherford Appleton Laboratories, Didcot, Oxon, England Science and Engineering Research Council, Rutherford Appleton Laboratories, Didcot, Oxon, England 10 Kiel, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany Kiel, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 11 Max-Planck-Institut fuer Kernphysik, Heidelberg, Federal Republic of Germany Max-Planck-Institut fuer Kernphysik, Heidelberg, Federal Republic of Germany 12 Universitaetssternwarte, Muenchen, Germany Universitaetssternwarte, Muenchen, Germany 13 European Southern Observatory, Munich, Federal Republic of Germany European Southern Observatory, Munich, Federal Republic of Germany 14 Pic du Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic du Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France 15 Royal Greenwich Observatory, Herstmonceux, East Sussex, England Royal Greenwich Observatory, Herstmonceux, East Sussex, England 16 Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Republic of Germany Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Republic of Germany Max-Plank-Institut fuer Astronomie, Heidelberg, Federal Republic of Germany Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Repubilc of Germany Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Repubic of Germany 17 Aerospace Corp., Electronics Research Laboratory, Los Angeles, CA Aerospace Corp., Electronics Research Laboratory, Los Angeles, CA 18 National Optical Astronomical Observatory, Tucson, AZ National Optical Astronomical Observatory, Tucson, AZ 19 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt 20 Max-Planck-Institute fuer Radioastronomie, Bonn, West Germany Max-Planck-Institut fuer Radioastronomie, Bonn, West Germanuy Max-Planck-Institute fuer Radioastronomie, Bonn, West Germany Max-Planck-Institut fuer Radiostronomie, Bonn, West Germany Max-Planck-Institut fur Radioastronomie, Bonn, West Germany Max-Planck-Institut fuer Radioastronomie, Bonn, West Germany Max-Plank-Institut fur Radioastronomie, Bonn, West Germany Max-Planck Institut fuer Radioastronomie, Bonn, West Germany 21 Spetsial'naia Astrofizicheskaia Observatoriia, Stavropol, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Stavropol, USSR 22 National Optical Astronomy Observatories, Pasadena, CA National Optical Astronomy Observatories, Pasadena, CA 23 Cambridge Univ. Inst. of Astronomy, Observatories, United Kingdom Cambridge Univ. Inst. of Astronomy, Observatories, United Kingdom 24 Spetsial'naia Astrofizicheskaia Observatoriia, Leningrad, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Leningrad, USSR 25 Five College Radio Astronomy Observatory, Amherst Five College Radio Astronomy Observatory, Amherst 26 NASA. Jet Propulsion Laboratory, Pasadena, CA, US NASA. Jet Propulsion Laboratory, Pasadena, CA, US 27 Universitetets Astronomiske Observatorium, Tollose, Denmark Universitetets Astronomiske Observatorium, Tollose, Denmark Universitets Astronomiske Observatorium, Tollose, Denmark 28 National Optical Astronomy Observatories, Casilla, La Serena, Chile National Optical Astronomy Observatories, Casilla, La Serena, Chile 29 Cerro Tololo Inter-American Observatory, Casilla, La Serena, Chile Cerro Tololo Inter-American Observatory, Casilla, La Serena, Chile 30 National Radio Astronomy Observatory, Socorro, NM 87801, USA National Radio Astronomy Observatory, Socorro, NM 87801, USA 31 National Radio Astronomy Observatory Charlottesville, Va. National Radio Astronomy Observatory Charlottesville, Va. National Radio Astronomy Observatory, Charlottesville, Va. 32 South African Astronomical Observatory, Observatory, South Africa South African Astronomical Observatory, Observatory, South Africa 33 Max-Planck-Institut fuer Astronomie, Koenigstuhl, West Germany Max-Planck-Institut fuer Astronomie, Koenigstuhl, West Germany 34 Cerro Tololo-American Observatory, La Serena, Chile Cerro Tololo-American Observatory, La Serena, Chile 35 Cerro Tololo Inter-American Observatory, Tucson, Ariz. Cerro Tololo Inter-American Observatory, Tucson, Ariz. 36 Cerro Tololo Inter-American Observatory, LaSerena, Chile Cerro Tololo Inter-American Observatory, LaSerena, Chile 37 Universitetets, Astronomiske Observatorium, Copenhagen, Denmark Universitetets, Astronomiske Observatorium, Copenhagen, Denmark Universitetets Astronomiske Observatorium, Kopenhagen, Denmark 38 National Astronomical Observatory, Mizusawa, Iwate, Japan National Astronomical Observatory, Mizusawa, Iwate, Japan 39 Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz 40 Inst. de Radioastronomie Millimetrique, St. M. d'Heres, France Inst. de Radioastronomie Millimetrique, St. M. d'Heres, France 41 Osservatorio Astronomico di Brera, Milan, Italy Osservatorio Astronomico di Brera, Milan, Italy Osservatorio Astronomico di Brera, Milano, Italy 42 Osservatorio Astronomico di Torino, Torino, Italy Osservatorio Astronomico di Torino, Torino, Italy 43 Observatorio Astronomico Observatorio Astronomico 44 Instituto de Astrofisica de Canarias, Tenerife Instituto de Astrofisica de Canarias, Tenerife 45 Inst. de Astronomia de Canarias, La Laguna, Spain Inst. de Astronomia de Canarias, La Laguna, Spain 46 Inst. de Astrofisica de Canarias, La Laguna, Spain Inst. de Astrofisica de Canarias, La Laguna, Spain 47 Max-Planck-Institut fuer Radioastronomie, West Germany Max-Planck-Institut fuer Radioastronomie, West Germany 48 Institute of Astronomy, Madingley Road, nCambridge CB3 0HA Institute of Astronomy, Madingley Road, nCambridge CB3 0HA 49 Osservatorio Astronomico di Roma, Monte Porzio, Italy Osservatorio Astronomico di Roma, Monte Porzio, Italy 50 National Radio Astronomy Observatory, Charlottesville, VA, US National Radio Astronomy Observatory, Charlottesville, VA, US National Radio Astronomy Observatory, Charlottesvill, VA, US National Radio Astronomy Observatory, Charlottsville, VA, US 51 Pic du Midi et Toulouse, Observatories, Toulouse, France Pic du Midi et Toulouse, Observatories, Toulouse, France 52 Yale University, Observatory, New Haven, Conn. Yale University, Observatory, New Haven, Conn. Yale University Observatory, New Haven, Conn. 53 Warner and Swasey Observatory, East Cleveland, Ohio Warner and Swasey Observatory, East Cleveland, Ohio 54 Mt. Stromlo and Siding Spring Observatory, Canberra, Australia Mt. Stromlo and Siding Spring Observatory, Canberra, Australia Mt. Stromlo and Siding Spring Observatory, Camberra, Australia 55 Osservatorio Astronomico di Monte Mario, Rome, Italy Osservatorio Astronomico di Monte Mario, Rome, Italy Osservatorio Astronomico su Monte Mario, Rome, Italy 56 European Southern Observatory, Santiago, Chile European Southern Observatory, Santiago, Chile 57 Cerro Tololo InterAmerican Observatory, La Serena, Chile Cerro Tololo InterAmerican Observatory, La Serena, Chile 58 University of California at Davis, Davis, CA, US University of California at Davis, Davis, CA, US 59 University, Observatory, Saint Andrews, Scotland University, Observatory, Saint Andrews, Scotland University Observatory, Saint Andrews, Scotland 60 National Optical Astronomical Observatories, Tucson, AZ, US National Optical Astronomical Observatories, Tucson, AZ, US 61 Universitetes Astronomiske Observatorium, Copenhagen, Denmark Universitet Astronomiske Observatorium, Copenhagen, Denmark Universitetes Astronomiske Observatorium, Copenhagen, Denmark Universitets Astronomiske Observatorium, Copenhagen, Denmark Universitetets Astronomiske Observatorium, Copenhagen, Denmark 62 California Institute of Technology, Big Pine, CA, US California Institute of Technology, Big Pine, CA, US 63 Institute of Advanced Study, Princeton, N.J. Institute of Advanced Study, Princeton, N.J. Institute of Advanced Study, Princeton, NJ 64 Inst. of Physical and Chemical Research, Wako, Japan Inst. of Physical and Chemical Research, Wako, Japan 65 University of California at San Diego, La Jolla, CA, US University of California at San Diego, La Jolla, CA, US 66 CNRS, Laboratoire d'Aeronomie, Verrieres-le-Buisson, Essonne, France CNRS, Laboratoire d'Aeronomie, Verrieres-le-Buisson, Essonne, France 67 Observatoire de Paris-Meudon, Paris, France Observatoire de Paris-Meudon, Paris, France Observatorie de Paris-Meudon, Paris, France 68 Universidad de Cantabria Universidad de Cantabria 69 Univ. de Los Andes, Merida, Venezuela Univ. de Los Andes, Merida, Venezuela 70 Observatoire de Calern, Caussols, France Observatoire de Calern, Caussols, France 71 Universite Paris 7, Meudon, France Universite Paris 7, Meudon, France 72 Univ. Catolica de Chile, Santiago Univ. Catolica de Chile, Santiago 73 Osservatorio Astronomico, Rome Osservatorio Astronomico, Rome 74 Universidad de Chile Universidad de Chile 75 Universita Padova, Padova, Italy Universita Padova, Padova, Italy 76 Universitaets-Sternwarte, Munich Universitaets-Sternwarte, Munich 77 Universidat de Chile, Santiago Universidat de Chile, Santiago Universidad de Chile, Santiago 78 Universita di Pavia, Pavia, Italy Universita di Pavia, Pavia, Italy 79 Universidad de los Andes Universidad de los Andes 80 Observatorie de Grenoble, Grenoble, France Observatorie de Grenoble, Grenoble, France Observatoire de Grenoble, Grenoble, France 81 Paris, Observatoire, Meudon, Hauts-de-Seine, France Paris, Observatoire, Meudon, Hauts-de-Seine, France Paris, Obsrvatoire, Meudon, Hauts-de-Seine, France Paris, Observatoire, Meudon, Hautes-de-Seine, France Paris Observatoire, Meudon, Hauts-de-Seine, France 82 New Hampshire, University Durham, NH New Hampshire, University Durham, NH 83 Texas, University, Fort Davis, Tex. Texas, University, Fort Davis, Tex. 84 Universite Laval, Quebec Universite Laval, Quebec 85 Aerospace Corp., Space Physics Laboratory, Los Angeles, Calif. Aerospace Corp., Space Physics Laboratory, Los Angeles, Calif. 86 Aerospace Corp., Space Sciences Laboratory, Los Angeles, Calif. Aerospace Corp., Space Science Laboratory, Los Angeles, Calif. Aerospace Corp., Space Sciences Laboratory, Los Angeles Calif. Aerospace Corp., Space Sciences Laboratory, Los Angeles, Calif. 87 Geneve, Observatoire, Chavannes-des-Bois, Switzerland Geneve, Observatoire, Chavannes-des-Bois, Switzerland 88 Cape Town, University, Republic of South Africa Cape Town, University, Republic of South Africa 89 Saint Mary's University, Halifax, Nova Scotia, Canada Saint Mary's University, Halifax, Nova Scotia, Canada 90 Observatories of the Carnegie Institution, La Serena, Chile Observatories of the Carnegie Institution, La Serena, Chile 91 Observatorie de Besancon, Besancon, France Observatorie de Besancon, Besancon, France Observatoire de Besancon, Besancon, France 92 Carnegie Instution of Washington, La Serena, Chile Carnegie Instution of Washington, La Serena, Chile 93 Rio Grande do Norte, Universidade Federal, Natal, Brazil Rio Grande do Norte, Universidade Federal, Natal, Brazil 94 Arcetri, Osservatorio Astrofisico, Florence, Italy Arcetri, Osservatorio Astrofisico, Florence, Italy Arcetri Osservatorio Astrofisico, Florence, Italy 95 Univ. Nacional Autonoma de Mexico, Mexico, D.F., Mexico Univ. Nacional Autonoma de Mexico, Mexico, D.F., Mexico 96 Observatories of the Carnegie Inst., Pasadena, CA, US Observatories of the Carnegie Inst., Pasadena, CA, US 97 Iowa State Univ. of Science and Technology, Ames Iowa State Univ. of Science and Technology, Ames 98 ESA, Villafranca Satellite Tracking Station, Madrid, Spain ESA, Villafranca Satellite Tracking Station, Madrid, Spain ESA, Villafranco Satellite Tracking Station, Madrid, Spain ESA, Villafranca, Satellite Tracking Station, Madrid, Spain ESA Villafranca Satellite Tracking Station, Madrid, Spain 99 European Southern Observatory, Hamburg, West Germany European Southern Observatory, Hamburg, West Germany 100 Bordeaux I, Universite, Observatoire, Floirac, Gironde, France Bordeaux I, Universite, Observatoire, Floirac, Gironde, France Bordeaux, Universite, Observatoire, Floirac, Gironde, France 101 University of California, San Diego, La Jolla, CA, US University of California, San Diego, La Jolla, CA, US 102 Observatorio Nacional do Brasil, Sao Cristovao, Rio de Janeiro, Brazil Observatorio Nacional do Brasil, Sao Cristovao, Rio de Janeiro, Brazil 103 Observatorio Nacional, Rio de Janeiro, Brazil Observatorio Nacionale, Rio de Janeiro, Brazil Observatorio Nacional, Rio de Janerio, Brazil Observatorio Nacional, Rio de Janeiro, Brazil 104 Rio Grande do Sul, Univ. Federal, Porto Alegre, Brazil Rio Grande do Sul, Univ. Federal, Porto Alegre, Brazil 105 Observatoire de Paris, Meudon Principal, France Observatoire de Paris, Meudon Principal, France 106 Geneve, Observatoire, Chavanne-des-Bois, Switzerland Geneve, Observatoire, Chavanne-des-Bois, Switzerland 107 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA y Institute of Astronomy, Madingley Road, Cambridge CB3 0HA y 108 NASA/Fermi National Accelerator Laboratory, Batavia, IL NASA/Fermi National Accelerator Laboratory, Batavia, IL 109 Observatorio Astrofisico di Brera, Milano, Italy Observatorio Astrofisico di Brera, Milano, Italy 110 Los Alamos National Laboratories, Los Alamos, NM, US Los Alamos National Laboratories, Los Alamos, NM, US 111 Lockheed Palo Alto Research Laboratories, Palo Alto, CA, US Lockheed Palo Alto Research Laboratories, Palo Alto, CA, US 112 London, University College, Dorking, Surrey, England London, University College, Dorking, Surrey, England 113 CNR, Laboratorio di Radio Astronomia, Bologna, Italy CNR, Laboratorio di Radio Astronomia, Bologna, Italy CNR, Laboratorio di Radioastronomia, Bologna, Italy 114 Observatorio Nacional do Brasil, Rio de Janeiro, Brazil Observatorio Nacional do Brazil, Rio de Janeiro, Brazil Observatorio Nacional do Brasil, Rio de Janeiro, Brazil Observatorio Nacional do Brasil, Rio de Janiero, Brazil 115 Observatoire du Mont Megantic, Montreal, Canada Observatoire du mont Megantic, Montreal, Canada Observatoire du Mont Megantic, Montreal, Canada Observatoire du Monte Megantic, Montreal, Canada 116 The Observatories of the Carnegie Institution, La Serena, Chile The Observatories of the Carnegie Institution, La Serena, Chile 117 Case Western Reserve University, Cleveland, OH, US Case Western Reserve University, Cleveland, OH, US 118 Laboratory for Space Research, Leiden, The Netherlands Laboratory for Space Research, Leiden, The Netherlands 119 Case Western Reserve University, East Cleveland, OH Case Western Reserve University, East Cleveland, OH 120 Observatorium Hoher List, Daun, Federal Republic of Germany Observatorium Hoher List, Daun, Federal Republic of Germany 121 California Institute of Technology, Pasadena, CA, US California Institue of Technology, Pasadena, CA, US California Isntitute of Technology, Pasadena, CA, US Calfornia Institute of Technology, Pasadena, CA, US California Institute of Technology, Pasadena, Ca, US California Institute of Technology, Pasadena, CA, US California Insititute of Technology, Pasadena, CA, US 122 National Bureau of Standards, Gaithersburg, Md. National Bureau of Standards, Gaithersburg, Md. National Bureau of Standards, Gaithersburg, MD 123 Beijing Normal Observatory, Beijing, People's Republic of China Beijing Normal Observatory, Beijing, People's Republic of China 124 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 125 Akademiia Nauk SSSR, Fizicheskii Institut, Moscow, USSR Akademiia Nauk SSSR, Fizicheskii Institut, Moscow, USSR 126 Canada, France, Hawaii Telescope Corp., Kamuela, HI Canada, France, Hawaii Telescope Corp., Kamuela, HI 127 U.S. Navy, Naval Research Lab., Washington U.S. Navy, Naval Research Lab., Washington 128 Louisiana State Univ., Baton Rouge, LA, US Louisiana State Univ., Baton Rouge, LA, US 129 Observatoire du Mont-Megantic, Montreal, Canada Observatoire du Mont-Megantic, Montreal, Canada 130 Hughes Aircraft Co., Los Angeles, CA Hughes Aircraft Co., Los Angeles, CA 131 Univ. of Milan, Milan, Italy Univ. of Milan, Milan, Italy 132 Univ. di Firenze, Firenze, Italy Univ. di Firenze, Firenze, Italy 133 Univ. di Pavia, Pavia, Italy Univ. di Pavia, Pavia, Italy Univ. de Pavia, Pavia, Italy 134 Univ. di Catania, Catania, Italy Univ. di Catania, Catania, Italy 135 Univ. di Napoli, Napoli, Italy Univ. di Napoli, Napoli, Italy 136 Univ. di Genova, Genova, Italy Univ. di Genova, Genova, Italy 137 Observatorio Nacional do Brazil, Rio de Janeiro Observatorio Nacional do Brazil, Rio de Janeiro 138 California Univ., Los Angeles, CA, US California Univ., Los Angeles, CA, US 139 CNPq-Observatorio Nacional, Rio de Janeiro, Brazil CNPq-Observatorio Nacional, Rio de Janeiro, Brazil CNPq/Observatorio National, Rio de Janeiro, Brazil 140 Universita di Padova, Padova, Italy Universita di Padova, Padova, Italy 141 Univ. di Lecce, Lecce, Italy Univ. di Lecce, Lecce, Italy 142 Huygens Laboratorium, Leiden, Netherlands Huygens Laboratorium, Leiden, Netherlands 143 Osservatorio Astronomico, Rome, Italy Osservatorio Astronomico, Rome, Italy 144 Mt. Stromlo and Siding Spring Observatories, Woden, Australia Mt. Stromlo and Siding Spring Observatories, Woden, Australia 145 Cerro Tololo Interamericano Observatorio, La Serena, Chile Cerro Tololo Interamericano Observatorio, La Serena, Chile 146 National Optical Astronomy Observatory, Tucson, AZ National Optical Astronomy Observatory, Tucson, AZ 147 Spetsial'naia Astrofizicheskaia Observatoriia, Pulkovo, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Pulkovo, USSR 148 Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian, SSR Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian, SSR Krymskaia Astrofizicheskai Observatoriia, Nauchny, Ukrainian SSR 149 Mt. Stromlo and Siding Spring Observatory, Weston, Australia Mt. Stromlo and Siding Spring Observatory, Weston, Australia 150 National Radio Astronomy Laboratory, Socorro, NM National Radio Astronomy Laboratory, Socorro, NM 151 National Radio Astronomy Observatory, Charlotsville, VA, US National Radio Astronomy Observatory, Charlotsville, VA, US 152 National Radio Astronomy Observatory, Tucson, Ariz. National Radio Astronomy Observatory, Tucson, Ariz. National Radio Astronomy Observatory, Tucscon, Ariz. 153 National Radio Astronomy Observatory, Socorro, NM, US National Radio Astronomy Observatory, Socorro, NM, US 154 Nat. Radio Astronomy Observatory, Charlottesville, VA, US Nat. Radio Astronomy Observatory, Charlottesville, VA, US 155 National Radio Atronomy Observatory, Tucson, AZ, US National Radio Atronomy Observatory, Tucson, AZ, US National Radio Astronomy Observatory, Tucson, AZ, US 156 National Radio Astronomy Observatory, Tucson, AZ National Radio Astronomy Observatory, Tucson, AZ 157 Royal Greenwich Observatory, Tenerife, Spain Royal Greenwich Observatory, Tenerife, Spain 158 Inst. de Radioastronomie Millimetrique, St.-Martin-d'Heres, France Inst. de Radioastronomie Millimetrique, St.-Martin-d'Heres, France 159 Inst. de Radio Astronomie Millimetrique, St. Martin d'Heres, France Inst. de Radio Astronomie Millimetrique, St. Martin d'Heres, France 160 National Radio Astronomy Observatory, Charlottesville National Radio Astronomy Observatory, Charlottesville 161 National Optical Astronomy Observatories, Sunspot, NM, US National Optical Astronomy Observatories, Sunspot, NM, US 162 National Radio Astronomy Observatory, Charlottesville, VA National Radio Astronomy Observatory, Charlottesville, VA National Radio Astronomy Observatory, Charolottesville, VA National Radio Astronomy Observatory, Charlottesville, WV National Radio Astronomy Observatory, Charlotesville, VA Natitonal Radio Astronomy Observatory, Charlottesville, VA National Radio Astronomy Observatory, Charlottesville, Va National Radio Astronomy Observatory, Charlottesvile, VA 163 Lawrence Livermore National Observatory, Livermore, CA, US Lawrence Livermore National Observatory, Livermore, CA, US 164 Bordeaux I, Universite, Observatoire, Floirac, France Bordeaux I, Universite, Observatoire, Floirac, France 165 Mullard Radio Astronomy Observatory, Cambridge, Mass. Mullard Radio Astronomy Observatory, Cambridge, Mass. 166 National Opitcal Astronomical Observatories, La Serena, Chile National Opitcal Astronomical Observatories, La Serena, Chile National Optical Astronomical Observatories, La Serena, Chile 167 National Astronomy Observatory, Charlottesville, VA National Astronomy Observatory, Charlottesville, VA 168 Tartu Astrophysical Observatory, Toravere, Estonian SSR Tartu Astrophysical Observatory, Toravere, Estonian SSR 169 Dominion Radio Astrophysical Observatory, Penticon, British Columbia, Canada Dominion Radio Astrophysical Observatory, Penticon, British Columbia, Canada Dominion Radio Astrophysical Observatory, Penticton, British Columbia, Canada 170 Dominion Radio Astrophysical Observatory, Victoria, British Columbia, Canada Dominion Radio Astrophysical Observatory, Victoria, British Columbia, Canada 171 Mount Wilson and Las Campanas Observatories, La Serena, Chile Mount Wilson and Las Campanas Observatories, La Serena, Chile 172 National Radio Astronomy Laboratory, Socorro, NM, US National Radio Astronomy Laboratory, Socorro, NM, US 173 Cape Town University, Rondebosch, Republic of South Africa Cape Town University, Rondebosch, Republic of South Africa Cape Town, University, Rondesbosch, Republic of South Africa Cape Town, University, Rondebousch, Republic of South Africa Cape Town, University, Rondebosh, Republic of South Africa Cape Town, University, Rondebosch, Republik of South Africa Cape Town, University, Rondebosch Republic of South Africa Cape Town, University, Rondebosch, Republic of South Africa 174 The Inst. of Physical and Chemical Research, Saitama, Japan The Inst. of Physical and Chemical Research, Saitama, Japan 175 Instituto de Astronomia y Fisica de Espacio, Buenos Aires, Argentina Instituto de Astronomia y Fisica de Espacio, Buenos Aires, Argentina Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 176 Instituto de Astrofisica de Canaries, Canary Islands, Spain Instituto de Astrofisica de Canaries, Canary Islands, Spain 177 Instituto de Astronomia y Fisica del Espacio, Buenos Aires Instituto de Astronomia y Fisica del Espacio, Buenos Aires 178 Institute for Space and Astronautical Science, Sagamihara, Japan Institute for Space and Astronautical Science, Sagamihara, Japan Institute of Space and Astronautical Science, Sagamihara, Japan 179 The Institute of Space and Astronautical Science, Kanagawa, Japan The Institute of Space and Astronautical Science, Kanagawa, Japan 180 Instituto de Astrofisca de Canarias, La Laguna, Spain Instituto de Astrofisca de Canarias, La Laguna, Spain Instituto de Astrofisca de Canarias, La Laguana, Spain 181 Aerospace Corp., Space Sciences Laboratory, El Segundo, Calif. Aerospace Corp., Space Sciences Laboratory, El Segundo, Calif. 182 Aerospace Corp., Space Sciences, Laboratory, Los Angeles, CA Aerospace Corp., Space Sciences, Laboratory, Los Angeles, CA Aerospace Corp., Space Science Laboratory, Los Angeles, CA Aerospace Corp., Space Sciences, Laboratory, Los Angeles, CA Aerospace Corp., Space Science Laboratory, Los Angeles, CA 183 Aerospace Corp., Space Sciences Laboratory, El Segundo, CA Aerospace Corp., Space Sciences Laboratory, El Segundo, CA 184 London, University College, Surrey, England London, University College, Surrey, England 185 Southern California, University, Los Angeles, CA Southern California, University, Los Angeles, CA 186 Technion Israel Inst. of Tech., Haifa, Israel Technion Israel Inst. of Tech., Haifa, Israel 187 London, University College, Dorring, Surrey, England London, University College, Dorring, Surrey, England London, Univeristy College, Dorking, Surrey, England 188 Bonn, Universitaet, Sternwarte, Daun, West Germany Bonn, Universitaet, Sternwarte, Daun, West Germany 189 Dalhousie University, Halifax, Nova Scotia, Canada Dalhousie University, Halifax, Nova Scotia, Canada Dalhousie Univeristy, Halifax, Nova Scotia, Canada 190 Royal Greenwich Observatory, Hailsham, Sussex, England Royal Greenwich Observatory, Hailsham, Sussex, England Royal Greenwich Observatory, Hailsham Sussex, England 191 SERC, Rutherford Appleton Laboratory, Didcot, England SERC, Rutherford Appleton Laboratory, Didcot, England SERC, Rutherford-Appleton Laboratory, Didcot, England 192 Cambridge University Observatories, Cambridge, England Cambridge University Observatories, Cambridge, England 193 Turku, University Observatory, Turku, Finland Turku, University Observatory, Turku, Finland Turku University Observatory, Turku, Finland 194 Royal Greenwich Observatory, Herstmonceaux, Sussex, England Royal Greenwich Observatory, Herstmonceaux, Sussex, England 195 NASA, Ames Research Center, Space Science Div., Moffett Field NASA, Ames Research Center, Space Science Div., Moffett Field NASA, Ames Research Center, Space Sciences Div., Moffett Field 196 NASA. Ames Research Center, Moffett Field, CA, US NASA. Ames Research Center, Moffett Field, CA, US NASA. Ames Research Center, Moffet Field, CA, US NASA Ames Research Center, Moffett Field, CA, US 197 Lyon, Observatoire, Saint-Genis, Laval, Rhone, France Lyon, Observatoire, Saint-Genis, Laval, Rhone, France 198 Bandung Institute of Technology, Indonesia Bandung Institute of Technology, Indonesia 199 Canadian-French-Hawaiian Telescope Corp., Kamuela, HI Canadian-French-Hawaiian Telescope Corp., Kamuela, HI 200 Lockheed Research Laboratories, Palo Alto, CA Lockheed Research Laboratories, Palo Alto, CA 201 Carnegie Institution of Washington, Observatories, Pasadena, CA Carnegie Institution of Washington, Observatories, Pasadena, CA 202 Carnegie Institute of Washington, Pasadena, CA, US Carnegie Institute of Washington, Pasadena, CA, US 203 Scuola Internazionale Superiore de Studi Avanzati, Trieste Scuola Internazionale Superiore de Studi Avanzati, Trieste 204 Instituto de Pesquisas Espaciais, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Paulo, Brazil Instituto de Pesquisas Espaciaes, Sao Paulo, Brazil 205 The Institute of Physical and Chemical Research, Saitama, Japan The Institute of Physical and Chemical Research, Saitama, Japan The Institute of Physics and Chemical Research, Saitama, Japan 206 Institute of Space and Astronautical Science, Sagamihara Institute of Space and Astronautical Science, Sagamihara 207 Observatories of the Carnegie Institution, Pasadena, CA, US Observatories of the Carnegie Institution, Pasadena, CA, US 208 NASA. Fermilab Astrophysics Center, Batavia, IL, US NASA. Fermilab Astrophysics Center, Batavia, IL, US 209 Louisiana State University, Baton Rouge, La. Louisiana State University, Baton Rouge, La. 210 Roma, Osservatorio Astronomico, Monteporzio, Italy Roma, Osservatorio Astronomico, Monteporzio, Italy 211 Canada-France-Hawaii Telescope Corporation, Kamuela, HI, US Canada-France-Hawaii Telescope Corporation, Kamuela, HI, US 212 Carter National Observatory, Wellington, New Zealand Carter National Observatory, Wellington, New Zealand 213 National Radio Astronomy Observatory, Socorro National Radio Astronomy Observatory, Socorro 214 National Astronomical Observatory of Japan, Mitaka National Astronomical Observatory of Japan, Mitaka 215 National Astronomical Observatory of Japan, Mitaka, Japan National Astronomical Observatory of Japan, Mitaka, Japan 216 Anglo-Australian Observatory, Epping, Australia Anglo-Australian Observatory, Epping, Australia Anglo-Australian, Observatory, Epping, Australia 217 Anglo-Australian Observatory, Sydney, Australia Anglo-Australian Observatory, Sydney, Australia 218 Five College Radio Astronomy Observatory, Amherst, Mass. Five College Radio Astronomy Observatory, Amherst, Mass. 219 National Astronomical Observatory, Tokyo, Japan National Astronomical Observatory, Tokyo, Japan 220 National Astronomical Observatory, Nagano, Japan National Astronomical Observatory, Nagano, Japan 221 National Astronomical Observatory, Mitaka, Japan National Astronomical Observatory, Mitaka, Japan 222 National Optical Astronomy Observatories, Tucson, AZ National Optical Astronomy Observatories, Tucson, AZ 223 Five College Radio Astronomy Observatory, Amherst, MA Five College Radio Astronomy Observatory, Amherst, MA Five College Radio Astronomy Ovservatory, Amherst, MA Five College Radio Astronomy Observatory, Amherst MA 224 National Radio Astronomy Observatory, Soccoro, NM National Radio Astronomy Observatory, Soccoro, NM National Radio Astronomy Observatory, Socorro, NM 225 Mullard Radio Astronomy Observatory, Cambridge Mullard Radio Astronomy Observatory, Cambridge 226 Arthur J. Dyer Observatory, Nashville, TN Arthur J. Dyer Observatory, Nashville, TN 227 The Australian Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia The Australian Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia The Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia 228 Australia Telescope National Facility CSIRO, PO Box 76, Epping NSW2121, Australia Australia Telescope National Facility CSIRO, PO Box 76, Epping NSW2121, Australia 229 Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia 230 Australia Telescope National Facility, PO Box 76, CSIRO, Epping, NSW 2121, Australia Australia Telescope National Facility, PO Box 76, CSIRO, Epping, NSW 2121, Australia 231 Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW, 2121, Ausralia Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76 Epping, NSW 2121, Australia 232 CSIRO Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia CSIRO Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia 233 Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 234 National Astronomical Observatory, Smolyan, Bulgaria National Astronomical Observatory, Smolyan, Bulgaria 235 National Astronomical Observatory, Sofia, Bulgaria National Astronomical Observatory, Sofia, Bulgaria 236 Iowa State University of Science and Technology, Ames Iowa State University of Science and Technology, Ames 237 Cerro Tololo Inter. American Observ., La Serena, Chile Cerro Tololo Inter. American Observ., La Serena, Chile 238 Iowa State University of Science and Technology, Ames, IA Iowa State University of Science and Technology, Ames, IA 239 ESA, European Space Technology Centre, Noordwijk, Netherlands ESA, European Space Technology Centre, Noordwijk, Netherlands 240 Capetown, University, Rondebosch, Republic of South Africa Capetown, University, Rondebosch, Republic of South Africa 241 Cape Town, University, Rodenbosch, Republic of South Africa Cape Town, University, Rodenbosch, Republic of South Africa 242 China University of Science and Technology, Hefei, People's Republic of China China University of Science and Technology, Hefei, People's Republic of China 243 Anglo-Australian Observatory, Kensington, New South Wales, Australia Anglo-Australian Observatory, Kensington, New South Wales, Australia 244 Instituto Nacional de Pesquisas Espaciais, Sao Jose dos Campos, Brazil Instituto Nacional de Pesquisas Espacias, Sao Jose dos Campos, Brazil Instituto Nacional de Pesquisas Espaciais, Sao Jose dos Campos, Brazil Instituto Nacional de Pesquisas Espaciaias, Sao Jose dos Campos, Brazil 245 Stichting Radiostralinaj van Zon en Milkweg, Dwingeloo, Netherlands Stichting Radiostralinaj van Zon en Milkweg, Dwingeloo, Netherlands 246 Stichtung Radioastraling van zon en Melkweg, Dwingeloo, Netherlands Stichtung Radioastraling van zon en Melkweg, Dwingeloo, Netherlands 247 Stichting Radiostraling van Zon en Melkweg, Groningen, Netherlands Stichting Radiostraling van Zon en Melkweg, Groningen, Netherlands Stichting Radiostraling van zon en Melkweg, Groningen, Netherlands 248 Institute of Space and Astronautical Science, Sagamihara, Kanagawa, Japan Institute of Space and Astronautical Science, Sagamihara, Kanagawa, Japan Institute for Space and Astronautical Science, Sagamihara, Kanagawa, Japan 249 Anglo-Australian Observatory, New South Wales, Epping, Australia Anglo-Australian Observatory, New South Wales, Epping, Australia 250 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Federal Republic of Germany Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Federal Republic of Germany Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 251 National Radio Astronomy Observatory, Socorro, NM 87801-0387, USA National Radio Astronomy Observatory, Socorro, NM 87801-0387, USA 252 South African Astronomical Observatory, Cape Town, Republic of South Africa South African Astronomical Observatory, Cape Town, Republic of South Africa South African Astronomical Observatory, Capetown, Republic of South Africa 253 South African Astronomical Observatory, Sutherland, Republic of South Africa South African Astronomical Observatory, Sutherland, Republic of South Africa 254 South African Astronomical Institute, Observatory, Republic of South Africa South African Astronomical Institute, Observatory, Republic of South Africa 255 South African Astronomical Observatory, Observatory, Republic of South Africa South African Astronomical Observatory, Observatory, Republic of South Africa South African Asteronomical Observatory, Observatory, Republic of South Africa South Africa Astronomical Observatory, Observatory, Republic of South Africa 256 South African Astronomy Observatory, Observatory, Republic of South Africa South African Astronomy Observatory, Observatory, Republic of South Africa 257 South African Astronomical Observatory, Observatory, Cape Province, Republic of South Africa South African Astronomical Observatory, Observatory, Cape Province, Republic of South Africa 258 University of Science and Technology of China, Hefei, People's Republic of China University of Science and Technology of China, Hefei, People's Republic of China 259 European Southern Observatory, Garching, Federal Republic of Germany European Southern Observatory, Garching, Federal Republic of Germany 260 Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees 261 Pic-du-Midi, Observatoire, Bagneres de Bigorre, Hautes-Pyrenees, France Pic-du-Midi, Observatoire, Bagneres de Bigorre, Hautes-Pyrenees, France 262 Purple Mountain Observatory, Nanjing, People's Republic of China Purple Mountain Observatory, Nanjing, People's Republic of China 263 University of Science and Technology, Hefei, People's Republic of China University of Science and Technology, Hefei, People's Republic of China 264 Spetsial'naia Astrofizicheskaia Observatoriia, Zelenchukskaya, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Zelenchukskaya, USSR 265 Anglo-Australian Observatory, New South Wales, Australia Anglo-Australian Observatory, New South Wales, Australia 266 National Radio Astronomy Observatory, Socorro, New Mexico, US National Radio Astronomy Observatory, Socorro, New Mexico, US 267 Indian Institute of Astrophysics, Bangalore 560 034, India Indian Institute of Astrophysics, Bangalore 560 034, India Indian Institute of Astrophysics, Bangalore 560034, India 268 Zuerich Eidgenoessische Technische Hochchule, Zurich, Switzerland Zuerich Eidgenoessische Technische Hochchule, Zurich, Switzerland 269 CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina CONICET, Instituto de Astronomia y Fisica del Espacio, Buenoe Aires, Argentina 270 Department of Astronomy, University of Cape Town, Rondebosch 7700, Cape Town, South Africa Department of Astronomy, University of Cape Town, Rondebosch 7700, Cape Town, South Africa 271 Potchefstroom University for Christian Higher Education, Republic of South Africa Potchefstroom University for Christian Higher Education, Republic of South Africa 272 Department of Physics, University of Keele, Staffs ST5 5BG, UK Department of Physics, University of Keele, Staffs ST5 5BG, UK 273 Department of Astronomy, University of Cape Town, Rondebosch 7700, Cape, South Africa Department of Astronomy, University of Cape Town, Rondebosch 7700, Cape, South Africa 274 Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 275 Scuola Internanazionale Superiore di Studi Avanzati, Trieste, Italy Scuola Internanazionale Superiore di Studi Avanzati, Trieste, Italy 276 Dept of Astronomy, University of Cape Town, Rondebosch 7700, South Africa Dept of Astronomy, University of Cape Town, Rondebosch 7700, South Africa 277 Anglo-Australian Observatory, Epping, New South Wales, England Anglo-Australian Observatory, Epping, New South Wales, England 278 South African Astronomical Observatory, Cape, Republic of South Africa South African Astronomical Observatory, Cape, Republic of South Africa 279 Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian SSR Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian SSR 280 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago, Chile Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago, Chile Ministerio de Education de Chile, Instituto Isaac Newton, Santiago, Chile 281 National Radio Astronomy Observatory, Socorro, New Mexico 8701, USA National Radio Astronomy Observatory, Socorro, New Mexico 8701, USA 282 Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa 283 St. Andrews, University Observatory, St. Andrews, Scotland St. Andrews, University Observatory, St. Andrews, Scotland St. Andrews University Observatory, St. Andrews, Scotland 284 Tartu Astrophysical Observatory, Toravere, EE-2444, Estonia Tartu Astrophysical Observatory, Toravere, EE-2444, Estonia 285 ESA, Villafranca del Castillo Satellite Tracking Station, Madrid, Spain ESA, Villafranca del Castillo Satellite Tracking Station, Madrid, Spain 286 NASA, Ames Research Center, Space Science Div., Moffett Field, CA NASA, Ames Research Center, Space Science Div., Moffett Field, CA NASA, Ames Research Center, Space Sciences Div., Moffett Field, CA NASA, Ames Research Center Space Sciences Div., Moffett Field, CA 287 NASA, Goddard Space Flight Center, Laboratory for Astrophysics and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astrophysics and Solar Physics, Greenbelt, MD 288 Nasa, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md. Nasa, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md. 289 NASA, Goddard Space Flight Center, Laboratory for Solar Physics and Astrophysics, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory for Solar Physics and Astrophysics, Greenbelt, Md. 290 NASA Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. NASA Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. 291 NASA, Goddard Space Flight Center, Laboratory of High Energy Astrophysics, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory of High Energy Astrophysics, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md. 292 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Astrophysics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Astrophysics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Astrophysics, Greenbelt, Md. 293 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, Ariz. NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, Ariz. 294 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddar Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory, for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory of Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Labortory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. NASA, Godard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddar Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory, for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory of Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Labortory for Astronomy and Solar Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. NASA, Godard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD 295 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Space Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Space Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Astronomy and Space Physics, Greenbelt, Md. 296 NASA, Goddard Space Flight Center, Laboratory for Solar Physics, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory for Solar Physics, Greenbelt, Md. 297 NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, Md. 298 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD NASA, Godard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD NASA, Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt, MD 299 Pic-duc-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes- Pyrenees, France Pic-duc-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes- Pyrenees, France Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France 300 Anglo-Australian Observatory, Coonabarabran, New South Wales, Australia Anglo-Australian Observatory, Coonabarabran, New South Wales, Australia 301 National Radio Astronomy Observatory, VLA, Socorro, NM 87801, USA National Radio Astronomy Observatory, VLA, Socorro, NM 87801, USA 302 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France 303 Pic-du-Midi et Toulouse, Observatoires, Bagneres-de Bigorre, Hautes-Pyrenees, France Pic-du-Midi et Toulouse, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi et Toulouse, Observatoires, Bagneres-de Bigorre, Hautes-Pyrenees, France Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hauts-Pyrenees, France 304 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heves, Isere, France Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heves, Isere, France Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, Isere, France 305 Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, Isere, France Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, Isere, France Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, Iseere, France Institut de Radio Astronomie Millimetrigue, Saint-Martin-d'Heres, Isere, France 306 Pic-du-Midi et de Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi et de Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France 307 Pic du Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic du Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France 308 NASA/IPAC, California Institute of Technology, Pasadena, CA, US NASA/IPAC, California Institute of Technology, Pasadena, CA, US 309 International School for Advanced Studies, Miramare-Trieste, Italy International School for Advanced Studies, Miramare-Trieste, Italy 310 Joint Institute for Labortory Astrophysics, Boulder, CO Joint Institute for Labortory Astrophysics, Boulder, CO 311 CNR, Istituto di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy 312 CNR, Istituto Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy 313 Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain 314 School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT 315 School of Physics and Space Research, University of Birmingham, Birmingham B15 2TT, UK School of Physics and Space Research, University of Birmingham, Birmingham B15 2TT, UK 316 School of Physics and Space Research, University of Birmingham, Birmingham B15 2TT School of Physics and Space Research, University of Birmingham, Birmingham B15 2TT 317 Department of Physics, Keele University, Keele, Staffs ST5 5BG Department of Physics, Keele University, Keele, Staffs ST5 5BG 318 School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK 319 School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT 320 London, University College, Dorking, United Kingdom London, University College, Dorking, United Kingdom 321 California Inst. of Tech, Pasadena, CA, US California Inst. of Tech, Pasadena, CA, US 322 Cambridge University, The Observatories, Cambridge, England Cambridge University, The Observatories, Cambridge, England 323 Anglo-Australian Observatory, Epping, NSW, Australia Anglo-Australian Observatory, Epping, NSW, Australia 324 David Dunlap Observatory, West Hill, Ontario, Canada David Dunlap Observatory, West Hill, Ontario, Canada 325 University Observatory, Glasgow, Scotland University Observatory, Glasgow, Scotland 326 University Observatory, St. Andrews, Scotland University, Observatory, St. Andrews, Scotland University Observatory, St. Andrews, Scotland University Observtory, St. Andrews, Scotland 327 London, University College, Holmbury St. Mary, Surrey, England London, University College, Holmbury St. Mary, Surrey, England 328 Osservatorio Astronomico di Collurania, Teramo, Italy Osservatorio Astronomico di Collurania, Teramo, Italy 329 Meudon, Observatorie, Meudon, Hauts-de-Seine, France Meudon, Observatorie, Meudon, Hauts-de-Seine, France Meudon, Oservatoire, Meudon, Hauts-de-Seine, France Meudon, Observatoire, Meudon, Hauts-de-Seinne, France Meudon, Observatoire Meudon, Hauts-de-Seine, France 330 Innsbruck, Universitaet, Innsbruck, Austria Innsbruck, Universitaet, Innsbruck, Austria 331 Dominion Astrophysical Observatory, Penticton, British Columbia, Canada Dominion Astrophysical Observatory, Penticton, British Columbia, Canada 332 NOAA, Space Environmental Laboratory, Boulder, CO NOAA, Space Environmental Laboratory, Boulder, CO 333 NOAA, Space Environment Laborabory, Boulder, CO NOAA, Space Environment Laborabory, Boulder, CO 334 NOAA, Space Environment Laboratory, Boulder NOAA, Space Environment Laboratory, Boulder 335 USAF, Geophysics Laboratory, Bedford, Mass. USAF, Geophysics Laboratory, Bedford, Mass. 336 USAF, Geophysics Laboratory, Hanscom AFB USAF, Geophysics Laboratory, Hanscom AFB 337 Royal Observatory, Blackford Hill, Edinburgh, UK Royal Observatory, Blackford Hill, Edinburgh, UK 338 Massachusetts Inst. of Tech., Cambridge, MA, US Massachusetts Inst. of Tech., Cambridge, MA, US 339 European Southern Observatory, Geneva European Southern Observatory, Geneva 340 Royal Greenwich Observatory, Cambridge, United Kingdom Royal Greenwich Observatory, Cambridge, United Kingdom 341 Royal Greenwich Observatory, Hailsham, England Royal Greenwich Observatory, Hailsham, England 342 Groningen, Rijksuniversiteit, Groningen Groningen, Rijksuniversiteit, Groningen 343 Leuven, Katholieve Universiteit, Louvain, Belgium Leuven, Katholieve Universiteit, Louvain, Belgium Leuven, Katholieke Universiteit Louvain, Belgium 344 Lunds Universitet, Lund, Sweden Lunds Universitet, Lund, Sweden 345 USAF, Geophysics Laboratory, Sunspot, NM USAF, Geophysics Laboratory, Sunspot, NM USAF, Geophysics Laboratory, Sunspot, MN USAF, Geophysical Laboratory, Sunspot, NM 346 Queen Mary College, London, England Queen Mary College, London, England 347 University of Toronto, Toronto, Canada University of Toronto, Toronto, Canada 348 University Coll., London, UK University Coll., London, UK 349 Argonne National Laboratory, Argonne Argonne National Laboratory, Argonne 350 DAEC Observatoire de Paris, Meudon, France DAEC Observatoire de Paris, Meudon, France 351 Five College Radio Astronomy Observatory Five College Radio Astronomy Observatory 352 Louisiana, University, Lafayette, LA Louisiana, University, Lafayette, LA 353 Tennessee State University, Nashville Tennessee State University, Nashville 354 Cambridge Univ., Cambridge, UK Cambridge Univ., Cambridge, UK 355 Univ of Pisa, Pisa, Italy Univ of Pisa, Pisa, Italy 356 Jerusalem, Hebrew University, Jerusalem, Israel Jerusalem, Hebrew University, Jerusalem, Israel 357 The Ohio State University, Columbus, OH, US The Ohio State University, Columbus, OH, US 358 Hebrew University, Jerusalem, Israel Hebrew University, Jerusalem, Israel 359 Laval, Universite, Quebec, Canada Laval, Universite, Quebec, Canada 360 Leuven, Katholieke Universiteit, Heverlee Leuven, Katholieke Universiteit, Heverlee 361 Dulwich College, London, England Dulwich College, London, England 362 Moscow State Univ., Russia Moscow State Univ., Russia 363 The Hebrew Univ., Jerusalem, Israel The Hebrew Univ., Jerusalem, Israel 364 Carnegie Institution, Observatories, Pasadena, CA Carnegie Institution, Observatories, Pasadena, CA 365 Royal Greenwich Observatory, Cambridge Royal Greenwich Observatory, Cambridge 366 Tennessee State University, Nashville, TN, US Tennessee State University, Nashville, TN, US 367 Pennsylvania State University, State College Pennsylvania State University, State College 368 Pennsylvania State University, Dunmore, Pa. Pennsylvania State University, Dunmore, Pa. 369 Space Telescope Science Inst., Baltimore, MD, US Space Telescope Science Inst., Baltimore, MD, US Space Telescope Science Inst., Baltimore,, MD, US Space Telescope Science Inst., Baltimore, MD, Us 370 Berlin, Technische Universitaet, Berlin Berlin, Technische Universitaet, Berlin 371 Muenchen, Technische Universitaet, Munich Muenchen, Technische Universitaet, Munich 372 Massachusetts, University, Amherst, MA Massachusetts, University, Amherst, MA 373 Observatorio de Astronomia, Brazil Observatorio de Astronomia, Brazil 374 Ohio State University, Columbus Ohio State University, Columbus Ohio State university, Columbus 375 Brookhaven National Laboratory, Upton Brookhaven National Laboratory, Upton 376 Univ. of Edinburgh, Edinburgh, UK Univ. of Edinburgh, Edinburgh, UK 377 Iowa State University, Ames, Iowa, US Iowa State University, Ames, Iowa, US 378 Colorado State University, Fort Collins Colorado State University, Fort Collins 379 New Hampshire, University, Durham New Hampshire, University, Durham 380 Michigan State University, Lansing Michigan State University, Lansing 381 Florida State Univ., Tallahassee Florida State Univ., Tallahassee 382 Rochester, University, Rochester Rochester, University, Rochester 383 Tennessee, University, Knoxville Tennessee, University, Knoxville 384 California State University, Long Beach, CA California State University, Long Beach, CA 385 University of Maryland, College Park, MD, US University of Maryland, College Park, MD, US 386 Univ. of Maryland, College Park, MD, US Univ. of Maryland, College Park, MD, US 387 Univ. of Calif., Irvine, CA, US Univ. of Calif., Irvine, CA, US 388 Georgia State University, Atlanta, GA, US Georgia State University, Atlanta, GA, US Georgia State Univesity, Atlanta, GA, US 389 Tokyo Astronomical Observatory, Mitaka, Japan Tokyo Astronomical Observatory, Mitaka, Japan 390 Cambridge Univ., Observatories, United Kingdom Cambridge Univ., Observatories, United Kingdom 391 Five College Astronomy Observatory, Amherst, MA Five College Astronomy Observatory, Amherst, MA 392 Shaanxi Astronomical Observatory, Lintong, China Shaanxi Astronomical Observatory, Lintong, China 393 Joint Astronomy Centre, Hilo, HI Joint Astronomy Centre, Hilo, HI Joint Astronomy Center, Hilo, HI Joint Astrnomy Center, Hilo, HI 394 University College, Oxford, England University College, Oxford, England 395 McDonald Observatory, Fort Davis McDonald Observatory, Fort Davis 396 Torino Osservatorio Astronomico, Turin, Italy Torino Osservatorio Astronomico, Turin, Italy 397 Carnegie Observatories, Pasedena, CA, US Carnegie Observatories, Pasedena, CA, US Carnegie Observatories, Pasadena, CA, US 398 Brussel Vrije Univ., Brussels, Belgium Brussel Vrije Univ., Brussels, Belgium Brussel, Vrije Univ., Brussels, Belgium 399 Osservatorio Astronomico de Brera, Merate, Italy Osservatorio Astronomico de Brera, Merate, Italy Osservatorio Astronomica di Brera, Merate, Italy 400 Asiago, Osservatorio Astronomico, Asiago, Italy Asiago, Osservatorio Astronomico, Asiago, Italy 401 Teramo, Osservatorio Astronomico, Teramo, Italy Teramo, Osservatorio Astronomico, Teramo, Italy 402 Inst. for Astronomy, Honolulu, HI, US Inst. for Astronomy, Honolulu, HI, US 403 Universidad Nacional Autonoma de Mexico, Obregon, Mexico Universidad Nacional Autonoma de Mexico, Obregon, Mexico 404 Universidad Nacional Autonoma de Mexico, Ensenada, Mexico Universidad Nacional Autonoma de Mexico, Ensenada, Mexico 405 Universidad National Autonoma de Mexico, D.F., Mexico Universidad National Autonoma de Mexico, D.F., Mexico 406 Andalucia, Inst. de Astrofisica, Granada Andalucia, Inst. de Astrofisica, Granada 407 St. Mary's Univ., Halifax, Nova Scotia, Canada St. Mary's Univ., Halifax, Nova Scotia, Canada St. Mary's Univ. Halifax, Nova Scotia, Canada 408 Australia Telescope, Epping, Australia Australia Telescope, Epping, Australia 409 Canada-France-Hawaii, Telescope Corp., Kamuela, HI Canada-France-Hawaii, Telescope Corp., Kamuela, HI 410 Canada-France-Hawaii Telescope Corp., Kamuela, HI, US Canada-France-Hawaii Telescope Corp., Kamuela, HI, US 411 Torino, Osservatorio Astronomico, Pino Torinese, Italy Torino, Osservatorio Astronomico, Pino Torinese, Italy 412 Scuola Internazionale Superiore di Studi Avanzati, Italy Scuola Internazionale Superiore di Studi Avanzati, Italy 413 Scuola Internazionale Superiore di Studi Avanzati Scuola Internazionale Superiore di Studi Avanzati 414 Scuola Internazionale di Studi Avanzati Scuola Internazionale di Studi Avanzati 415 National Optical Astornomy Observatories, Tucson National Optical Astornomy Observatories, Tucson 416 CNR, Gruppo Nazionale di Astronomia, Catania, Italy CNR, Gruppo Nazionale di Astronomia, Catania, Italy 417 Max-Planck-Inst. fuer Radioastronomie, Germany Max-Planck-Inst. fuer Radioastronomie, Germany 418 Space Research Groningen, Netherlands Space Research Groningen, Netherlands 419 Universitaets-Sternwarte, Graz, Austria Universitaets-Sternwarte, Graz, Austria 420 Warszawa, Uniwersytet, Warsaw, Poland Warszawa, Uniwersytet, Warsaw, Poland Warszawa, Universytet, Warsaw, Poland 421 University Observatory, Glasgow, Scotland, UK University Observatory, Glasgow, Scotland, UK 422 European Southern Obsevatory, Garching, Germany European Southern Obsevatory, Garching, Germany European Southern Observtory, Garching, Germany European Southern Obsevatory, Garching, Germany European Southern Observtory, Garching, Germany European Southern Obsevatory, Garching, Germany European Southern Observtory, Garching, Germany European Southern Obsevatory, Garching, Germany European Southern Observtory, Garching, Germany 423 University for Space Research, Groningen, Netherlands University for Space Research, Groningen, Netherlands 424 Lancashire Polytechnic, Preston, England Lancashire Polytechnic, Preston, England 425 Groningen University, Groningen, Netherlands Groningen University, Groningen, Netherlands 426 NASA, Johnson Space Center, Houston, Tex. NASA, Johnson Space Center, Houston, Tex. 427 Lancashire Polytechnic, Preston, Lancs., England Lancashire Polytechnic, Preston, Lancs., England 428 Royal Greenwich Observatory, Hermonstceux, England Royal Greenwich Observatory, Hermonstceux, England 429 NASA, Ames Research Center, Moffett Field, CA NASA, Ames Research Center, Moffett Field, CA NASA, Ames Research Center, Moffet Field, CA NASA Ames Research Center, Moffett Field, CA 430 Physical Research Lab., Ahmedabad, India Physical Research Lab., Ahmedabad, India 431 NASA/Fermilab Astrophysics Center, Batavia NASA/Fermilab Astrophysics Center, Batavia 432 Canada-France-Hawaii Telescope Corp., Kamuela, HI Canada-France-Hawaii Telescope Corp., Kamuela, HI Canada-France-Hawaii-Telescope Corp., Kamuela, HI Canada-France-Hawaii Telescope Corp., Kammela, HI 433 Canada-France-Hawaii Telescope Corp., Waimea, HI Canada-France-Hawaii Telescope Corp., Waimea, HI 434 Inst. de Astron. y Fisica del Esp., Buenos Aires, Argentina Inst. de Astron. y Fisica del Esp., Buenos Aires, Argentina 435 AN SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR AN SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR AN SSSR, Institut Kosmicheskykh Issledovanii, Moscow, USSR AN SSSR Institut Kosmicheskikh Issledovanii, Moscow, USSR 436 Aerospace Corp., Space Sciences Laboratory, Los Angeles Aerospace Corp., Space Sciences Laboratory, Los Angeles 437 NASA/Fermi National Accelerator Laboratory, Batavia NASA/Fermi National Accelerator Laboratory, Batavia 438 Lockheed Research Laboratory, Palo Alto, CA Lockheed Research Laboratory, Palo Alto, CA 439 Fermi National Accelerator Laboratory, Batavia, IL, US Fermi National Accelerator Laboratory, Batavia, IL, US 440 Lockheed Research Laboratories, Palo Alto, Calif. Lockheed Research Laboratories, Palo Alto, Calif. 441 Fermi National Accelerator Laboratory, Chicago, IL Fermi National Accelerator Laboratory, Chicago, IL 442 Fermi National Accelerator Laboratory, Batavia, IL Fermi National Accelerator Laboratory, Batavia, IL 443 National Optical Astronomical Observatories, Tucson, AZ National Optical Astronomical Observatories, Tucson, AZ 444 Lawrence Livermore National Laboratory, Livermore, CA, US Lawrence Livermore National Laboratory, Livermore, CA, US 445 Physical Research Laboratory, Navrangpura, India Physical Research Laboratory, Navrangpura, India 446 Brookhaven National Laboratory, Upton, N. Y. Brookhaven National Laboratory, Upton, N. Y. Brookhaven National Laboratory, Upton, N.Y. 447 The Hebrew Univ. of Jerusalem, Israel The Hebrew Univ. of Jerusalem, Israel 448 Los Alamos National Laboratory, NM Los Alamos National Laboratory, NM 449 Brookhaven National Laboratory, Upton, NY Brookhaven National Laboratory, Upton, NY Brookhaven, National Laboratory, Upton, NY 450 NOAA, Space Environment Laboratory NOAA, Space Environment Laboratory 451 Lockheed Research Laboratory, Palo Alto, Calif. Lockheed Research Laboratory, Palo Alto, Calif. 452 Institute for Advanced Study, Princeton, NJ, US Institute for Advanced Study, Princeton, NJ, US Institute of Advanced Study, Princeton, NJ, US 453 NASA. Ames Research Center, Moffit Field, CA, US NASA. Ames Research Center, Moffit Field, CA, US NASA Ames Research Center, Moffet Field, CA, US 454 Royal Greenwich Observatory, Herstmonceux, Essex, England Royal Greenwich Observatory, Herstmonceux, Essex, England Royal Greenwich Observatory, Herstmonceux, Sussex, England 455 Royal Greenwich Observatory, Cambridge, England, GB Royal Greenwich Observatory, Cambridge, England, GB 456 Royal Greenwich Observatory, Hertsmonceux, Sussex Royal Greenwich Observatory, Hertsmonceux, Sussex 457 Yale Univ. Observatory, New Haven, CT, US Yale Univ. Observatory, New Haven, CT, US 458 Arcetri, Osservatorio Astronomico, Florence, Italy Arcetri, Osservatorio Astronomico, Florence, Italy 459 Royal Greenwich Observatory, Hertmonceux, Sussex, England Royal Greenwich Observatory, Hertmontceux, Sussex, England Royal Greenwich Observatory, Hertmonceux, Sussex, England Royal Greenwich Observatory, Hertsmonceux, Sussex, England Royal Greenwich Observatory, Herstmonseux, Sussex, England 460 Astronomical Observatory, Uppsala, Sweden Astronomical Observatory, Uppsala, Sweden 461 Institute of Physical and Chemical Research, Saitama, Japan Institute of Physical and Chemical Research, Saitama, Japan 462 Instuto de Astrofisica de Canaries, Tenerife, Spain Instuto de Astrofisica de Canaries, Tenerife, Spain 463 Padua, Osservatorio Astronomico, Padova, Italy Padua, Osservatorio Astronomico, Padova, Italy 464 Catania, Osservatorio Astrofisico, Catania, Italy Catania, Osservatorio Astrofisico, Catania, Italy 465 Roma, Osservatorio Astronomico, Frascati, Italy Roma, Osservatorio Astronomico, Frascati, Italy 466 CNR, Gruppo Nazionale di Astronomia, Florence, Italy CNR, Gruppo Nazionale di Astronomia, Florence, Italy 467 Milano, Osservatorio Astronomico, Merate, Italy Milano, Osservatorio Astronomico, Merate, Italy 468 Collurania, Osservatorio Astronomico, Teramo, Italy Collurania, Osservatorio Astronomico, Teramo, Italy 469 Asiago, Osservatorio Astrofisico, Padua, Italy Asiago, Osservatorio Astrofisico, Padua, Italy 470 Asiago, Osservatorio Astronomico, Padua, Italy Asiago, Osservatorio Astronomico, Padua, Italy 471 Trieste, Osservatorio Astronomico, Trieste, Italy Trieste, Osservatorio Astronomico, Trieste, Italy Trieste, Osservatorio Astronoico, Trieste, Italy 472 Andalucia, Inst. de Astrofisica, Granada, Spain Andalucia, Inst. de Astrofisica, Granada, Spain 473 Carnegie Institute of Washington, Washingotn, DC, US Carnegie Institute of Washington, Washingotn, DC, US 474 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy 475 CNR, Ist. di Fisica dello Spazio Interplanetario, Frascati, Italy CNR, Ist. di Fisica dello Spazio Interplanetario, Frascati, Italy 476 Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy 477 Mullard Radio Observatory, Cambridge, England Mullard Radio Observatory, Cambridge, England 478 Istituto e Osservatorio Astronomico, Palermo, Italy Istituto e Osservatorio Astronomico, Palermo, Italy 479 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati 480 CNR, Istituto di Fisica Spazio Interplanetario, Frascati, Italy CNR, Istituto di Fisica Spazio Interplanetario, Frascati, Italy 481 CNR, Ist. Fisica Spazio Interplanetario, Frascati, Italy CNR, Ist. Fisica Spazio Interplanetario, Frascati, Italy 482 Scuola Internationale Superiore di Studi Avanzati, Trieste, Italy Scuola Internationale Superiore di Studi Avanzati, Trieste, Italy Scuolo Internazionale Superiore di Studi Avanzati, Trieste, Italy Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 483 Scuolo Internazionale Superiore di Sudi Avanzati, Trieste, Italy Scuolo Internazionale Superiore di Sudi Avanzati, Trieste, Italy 484 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt NASA, Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt 485 Rutherford Appleton Laboratory, Didcot, United Kingdom Rutherford Appleton Laboratory, Didcot, United Kingdom 486 Universitaets-Sternwarte, Goettingen, Germany Universitaets-Sternwarte, Goettingen, Germany 487 U.S. Navy, Naval Research Center, Washington, DC U.S. Navy, Naval Research Center, Washington, DC 488 U.S. Navy, Naval Research Laboratory, Washington U.S. Navy, Naval Research Laboratory, Washington 489 U.S. Navy, Naval Research Laboratory, Washington, DC U.S. Navy, Navel Research Laboratory, Washington, DC U.S. Navy, Naval Research Laboratory, Washington, DC U. S. Navy, Naval Research Laboratory, Washington, DC U.S. Navy, Navel Research Laboratory, Washington, DC U.S. Navy, Naval Research Laboratory, Washington, DC U. S. Navy, Naval Research Laboratory, Washington, DC 490 U.S. Navy, Naval Resarch Laboratory, Washington, D.C. U.S. Navy, Naval Resarch Laboratory, Washington, D.C. 491 NASA, Ames Research Center, Space Projects Div., Moffett Field, CA NASA, Ames Research Center, Space Projects Div., Moffett Field, CA 492 T. J. Watson Research Center, Yorktown Heights, NY, US T. J. Watson Research Center, Yorktown Heights, NY, US T.J. Watson Research Center, Yorktown Heights, NY, US 493 SERC, Rutherford Appleton Laboratory, Didcot SERC, Rutherford Appleton Laboratory, Didcot 494 NASA Ames Research Center, Moffett Field, California, US NASA Ames Research Center, Moffett Field, California, US 495 IBM Watson Research Center, Yorktown Heights, NY, US IBM Watson Research Center, Yorktown Heights, NY, US 496 NOAA, Space Environment Laboratory, Boulder, CO NOAA, Space Environment Laboratory, Boulder, CO 497 Institute of Space and Astronomical Science, Kanagawa, Japan Institute of Space and Astronomical Science, Kanagawa, Japan 498 Laboratory for Space Research Leiden, Leiden, Netherlands Laboratory for Space Research Leiden, Leiden, Netherlands 499 Bordeaux, Universite, Observatoire, Floriac, Gironde, France Bordeaux, Universite, Observatoire, Floriac, Gironde, France Bordeaux, Universite Observatoire, Floirac, Gironde, France 500 ESA, European Space Research and Technology Center, Noordwijk, Netherlands ESA, European Space Research and Technology Center, Noordwijk, Netherlands ESA, European Space Research and Technology Centre, Noordwijk, Netherlands 501 University of Manchester Institute of Science and Technology, Manchester, England University of Manchester Institute of Science and Technology, Manchester, England University of Manchester, Institute of Science and Technology, Manchester, England 502 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, Maryland 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, Maryland 21218, USA 503 California Institute of Technology, Pasadena, CA California Institute of Technology, Pasadena, CA 504 Shaanxi Observatory, Xian, People's Republic of China Shaanxi Observatory, Xian, People's Republic of China 505 Royal Greenwich Observatory, Herstmonceux, England Royal Greeenwich Observatory, Herstmonceux, England Royal Greenwich Observatory, Hertsmonceux, England Royal Greenwich Observatory, Herstmonceux, England 506 St. Andrews, University, Observatory, St. Andrews, Scotland St. Andrews, University, Observatory, St. Andrews, Scotland 507 Royal Greenwich Observatory, Madingley Road, Cambridge CB30EZ Royal Greenwich Observatory, Madingley Road, Cambridge CB30EZ 508 The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ 509 Warsaw Univ. Astronomical Observatory, Warsaw, Poland Warsaw Univ. Astronomical Observatory, Warsaw, Poland 510 Eidgenoessische Technische Hochschule, Zuerich, Switzerland Eidgenoessische Technische Hochschule, Zuerich, Switzerland Eidgenossische Technische Hochschule, Zurich, Switzerland Eidgenoessische Technische Hochschule, Zuerich, Switzerland Eidgenossische Technische Hochschule, Zurich, Switzerland 511 Zuerich, Eidgenoessische Technische Hochschule, Switzerland Zuerich, Eidgenoessische Technische Hochschule, Switzerland 512 Zurich, Eidgenoessische Technische Hochschule, Zurich, Switzerland Zuerich, Eidenoessische Technische Hochschule, Zurich, Switzerland Zurich, Eidgenoessische Technische Hochschule, Zurich, Switzerland Zuerich, Eidgenossische Technische Hochschule, Zurich, Switzerland Zuerich, Eidgenoessische Technische Hochschule, Zuerich, Switzerland Zuerich, Eidenoessische Technische Hochschule, Zurich, Switzerland Zurich, Eidgenoessische Technische Hochschule, Zurich, Switzerland Zuerich, Eidgenossische Technische Hochschule, Zurich, Switzerland Zuerich, Eidgenoessische Technische Hochschule, Zuerich, Switzerland Zuerich, Eidgenoessiche Technische Hochschule, Zurich, Switzerland Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 513 Akademiia Nauk SSSR, Institut Iadernykh Issledovanii, Moscow, USSR Akademiia Nauk SSSR, Institut Iadernykh Issledovanii, Moscow, USSR 514 NASA, Marshall Space Flight Center, Solar Sciences Branch, Huntsville, AL NASA, Marshall Space Flight Center, Solar Sciences Branch, Huntsville, AL 515 NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, Md. 516 CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Laboratorio di Technologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Laboratorio di Technologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy 517 CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy 518 CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Estraterrestri, Florence, Italy CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Estraterrestri, Florence, Italy CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Florence, Italy 519 CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna 520 CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Italy CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Italy 521 CNR, Laboratorio di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy CNR, Laboratorio di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy 522 CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna 523 CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Florence, Italy CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Florence, Italy 524 CNR, Istituto di Technologie e Studio delle Radiazzioni Estraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazzioni Estraterrestri, Bologna, Italy 525 CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazione Extraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazoni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazione Extraterrestri, Bologna, Italy 526 CNR, Istituto Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy 527 Rio Grande do Sul, Universidade Federal, Porto Alegre, Brazil Rio Grande do Sul, Universidade Federal, Porto Alegre, Brazil Rio Grande do Sul, Universidade, Federal, Porto Alegre, Brazil 528 CEA, Service de Physique Theorique, Gif-sur-Yvette, France CEA, Service de Physique Theorique, Gif-sur-Yvette, France 529 Scuola Internazionale Superior di Studi Avanzati, Trieste, Italy Scuola Internazinale Superiore di Studi Avanzati, Trieste, Italy Scuola Internazionale Superior di Studi Avanzati, Trieste, Italy Scuola Internazionale Superiore de Studi Avanzati, Trieste, Italy Scuola Internazinale Superiore di Studi Avanzati, Trieste, Italy Scuola Internazionale Superior di Studi Avanzati, Trieste, Italy Scuola Internazionale Superiore de Studi Avanzati, Trieste, Italy 530 Kobenhavns Universitets Astronomiske Observatorium, Copenhagen, Denmark Kobenhavns Universitets Astronomiske Observatorium, Copenhagen, Denmark 531 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia 532 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, France CNRS, Service d'Aeronomie, Verrieres-le-Buisson, France CNRS, Service d'Aeronomie Verrieres-le-Buisson, France 533 C.E. Saclay, Service d'Astrophysique, Gif-sur-Yvette, France C.E. Saclay, Service d'Astrophysique, Gif-sur-Yvette, France 534 CEA, DSM/ DAPNIA/Service d'Astrophysique, Gif sur Yvette, France CEA, DSM/ DAPNIA/Service d'Astrophysique, Gif sur Yvette, France 535 Scuola Internazionale di Studi Avanzati, Trieste, Italy Scuola Internazionale di Studi Avanzati, Trieste, Italy 536 SISSA-International School of Advanced Studies, Trieste, Italy SISSA-International School of Advanced Studies, Trieste, Italy 537 Scuola Internazionale Superiore di Studi Aviazioni, Trieste, Italy Scuola Internazionale Superiore di Studi Aviazioni, Trieste, Italy 538 Max-Planck-Institut fuer Aeronomie, Lindau, West Germany Max-Planck-Institut fuer Aeronomie, Lindau, West Germany 539 Pic du Midi et Toulouse Observatoires, Toulouse, France Pic du Midi et Toulouse Observatoires, Toulouse, France 540 CNR, Laboratorio Tecnologie e Studio Radiazoni Extraterrestri, Bologna, Italy CNR, Laboratorio Tecnologie e Studio Radiazoni Extraterrestri, Bologna, Italy CNR, Laboratorio Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy 541 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, AZ NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, AZ 542 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, Essonne, France CNRS, Service d'Aeronomie, Verrieres-le-Buisson, Essonne, France 543 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago 544 Consejo Superior de Investigaciones, Cientificas, Instituto de Astrofisica de Andalucia, Granada, Spain Consejo Superior de Investigaciones, Cientificas, Instituto de Astrofisica de Andalucia, Granada, Spain Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada, Spain 545 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada, Sp Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada, Sp 546 Consejo Superior de Investigaciones Cientificas Instituto de Astrofisica de Andalucia, Granada Consejo Superior de Investigaciones Cientificas Instituto de Astrofisica de Andalucia, Granada Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada 547 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, Tenerife, Spain Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, Tenerife, Spain 548 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain Cosejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain Consejo Superior de Investigaciones Cientifica s, Instituto de Astrofisica de Canarias, La Lag una, Spain 549 Institute of Astronomy, The Observatories, Cambridge CB3 0HA, UK Institute of Astronomy, The Observatories, Cambridge CB3 0HA, UK 550 Inst. de Astronomia y Fisica del Espacio, Buenos Aires Inst. de Astronomia y Fisica del Espacio, Buenos Aires 551 Indian Institute of Astrophysics, Bangladore, India Indian Institute of Astrophysics, Bangladore, India 552 Indian Isntitute of Astrophysics, Bangalore, India Indian Isntitute of Astrophysics, Bangalore, India 553 Cambridge University, Observatories, Cambridge, England Cambridge University, Observatories, Cambridge, England 554 Institute of Space and Astronautical Science, Tokyo, Japan Institute of Space and Astronautical Science, Tokyo, Japan 555 Osservatorio Astronomico di Trieste, Trieste, IT Osservatorio Astronomico di Trieste, Trieste, IT 556 Iowa State University of Science and Technology, Ames, Iowa Iowa State University of Science and Technology, Ames, Iowa 557 European Southern Observatory, Garching, West Germany European Southern Observatory, Garching, West Germany European Southern Observatory Garching, West Germany European Southern, Observatory, Garching, West Germany European Southern Observatory, Garcing, West Germany European Southern Observatoroy, Garching, West Germany 558 Carnegie Institution of Washington, Pasadena, CA Carnegie Institution of Washington, Pasadena, CA 559 Joint Inst. for Laboratory Astrophysics, Boulder Joint Inst. for Laboratory Astrophysics, Boulder 560 SRON, Lab. for Space Research, Netherlands SRON, Lab. for Space Research, Netherlands 561 Nat. Optical Astronomical Observatories, Tucson, AZ, US Nat. Optical Astronomical Observatories, Tucson, AZ, US 562 IBM Watson Research Center, Yorktown Heights, NY IBM Watson Research Center, Yorktown Heights, NY 563 California, University, Livermore and Berkeley, CA California, University, Livermore and Berkeley, CA 564 ESA, European Space Research and Technology Centre, Noordwijk ESA, European Space Research and Technology Centre, Noordwijk 565 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics 566 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics 567 NASA, Ames Research Center, Space Sciences Div., Moffett Field, Calif. NASA, Ames Research Center, Space Sciences Div., Moffett Field, Calif. NASA, Ames Research Center, Space Science Div., Moffett Field, Calif. 568 NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, Ala. NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, Ala. NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville, Ala. 569 European Space Research and Technololgy Centre, Noordwij, Netherlands European Space Research and Technololgy Centre, Noordwij, Netherlands European Space Research and Technology Centre, Noordwijk, Netherlands 570 NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville, AL NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville, AL NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, AL 571 NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville 572 Stichting Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands Stichting Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands Stichting Radiostraling van zon en Melkweg, Dwingeloo, Netherlands Stichting Radioastraling van Zon en Melkweg, Dwingeloo, Netherlands Stichtung Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands Stichting, Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands Stichting Radiostraling von Zon en Melkweg, Dwingeloo, Netherlands Stichting Radiostraling van Zon in Melkweg, Dwingeloo, Netherlands Stichting Radiostraling Van Zon en Melkweg, Dwingeloo, Netherlands 573 Universidad Nacional Autonoma de Mexico, Alvaro Obregon, Mexico Universidad Nacional Autonoma de Mexico, Alvaro Obregon, Mexico 574 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A. 575 Space Telescope Science Institute, 3700 San Martin Road, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Road, Baltimore, MD 21218, USA 576 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD 21218, USA 577 Kiel, Neue Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universitat, Institut fur theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universitaet, Institut fuer theoretische physik und Sternwarte, Kiel, West Germany 578 Kiel, Neue Universit t, Institut f r theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universit t, Institut f r theoretische Physik und Sternwarte, Kiel, West Germany 579 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, West Germany Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, West Germany Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, West Germany Kiel, Universitaet, Institute fuer theoretische Physik und Sternwarte, West Germany 580 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Universitaet, Institut fuer Theoretische Physik and Sternwarte, Kiel, West Germany Kiel Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany 581 Kiel, Universitaet, Institut fuer theoretische Physik, Federal Republic of Germany Kiel, Universitaet, Institut fuer theoretische Physik, Federal Republic of Germany 582 Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste 583 Max-Planck-Institut fuer Astronomie, Bonn, West Germany Max-Planck-Institut fuer Astronomie, Bonn, West Germany 584 SRON, Lab. for Space Research, Leiden, Netherlands SRON, Lab. for Space Research, Leiden, Netherlands 585 Rutherford Appleton Lab., Didcot, United Kingdom Rutherford Appleton Lab., Didcot, United Kingdom 586 New Hampshire Univ., Durham New Hampshire Univ., Durham 587 University College London, Holmbury, UK University College London, Holmbury, UK 588 Arecibo Observatory, Arecibo, PR Arecibo Observatory, Arecibo, PR 589 New Hampshire, University, Durham, NH New Hampshire, University, Durham, NH 590 Leuven, Katholieke Universiteit, Louvain, Belgium Leuven, Katholieke Universiteit, Louvain, Belgium Leuven, Katholieke Universiteit, Louvain, Belguim Leuven, Katholieke Universiteit , Louvain, Belgium 591 Paris, Observatoire, Meudon, Hauts-de-Seine Paris, Observatoire, Meudon, Hauts-de-Seine 592 Groningen State University, Groningen, Netherlands Groningen State University, Groningen, Netherlands 593 SRON, Lab. for Space Research, Utrecht, Netherlands SRON, Lab. for Space Research, Utrecht, Netherlands 594 Universidad de Cantabria, Santander Universidad de Cantabria, Santander 595 Universitaets-Sternwarte, Jena, East Germany Universitaets-Sternwarte, Jena, East Germany 596 San Jose State University, San Jose, CA San Jose State University, San Jose, CA 597 Dublin, University College, Dublin, Ireland Dublin, University College, Dublin, Ireland 598 University of Toronto, Mississauga, Ontario, Canada University of Toronto, Mississauga, Ontario, Canada 599 University of California, San Diego, CA, US University of California, San Diego, CA, US 600 University of California, Los Angeles, California, US University of California, Los Angeles, California, US 601 Villafranca Satellite Tracking Station, Madrid, Spain Villafranca Satellite Tracking Station, Madrid, Spain 602 Saint Mary's Univ., Halifax, Nova Scotia, Canada Saint Mary's Univ., Halifax, Nova Scotia, Canada 603 CNR, Istituto di Fisica Spazio Interplanetario, Frascati CNR, Istituto di Fisica Spazio Interplanetario, Frascati 604 Astronomical Observatory, Beijing, People's Republic of China Astronomical Observatory, Beijing, People's Republic of China 605 Astronomical Observatory, Nanjing, People's Republic of China Astronomical Observatory, Nanjing, People's Republic of China 606 California Institute of California, Pasadena, CA, US California Institute of California, Pasadena, CA, US 607 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK 608 Department of Physics, Keele University, Keele ST5 5BG, UK Department of Physics, Keele University, Keele ST5 5BG, UK 609 Astronomical Observatory, Kunming, People's Republic of China Astronomical Observatory, Kunming, People's Republic of China 610 Yunnan Observatory, Kunming, People's Republic of China Yunnan Observatory, Kunming, People's Republic of China Yunnam Observatory, Kunming, People's Republic of China 611 Mullard Radio Astronomy Observatory, Cambridge, United Kingdom Mullard Radio Astronomy Observatory, Cambridge, United Kingdom 612 Mullard Radio Astronomy Observatory, Cambridge, UK Mullard Radio Astronomy Observatory, Cambridge, UK 613 Mullard Radio Astronomy Observatory, Cambridge, England Mullard Radio Astronomy Observatory, Cambridge, England 614 Tartu Astrophysical Observatory, Tartu, Estonia Tartu Astrophysical Observatory, Tartu, Estonia 615 Beijing Astronomical Observatory, People's Republic of China Beijing Astronomical Observatory, People's Republic of China 616 IBM Thomas J. Watson Research Center, Yorktown Heights, NY IBM Thomas J. Watson Research Center, Yorktown Heights, NY IBM Thomas J. Watson Research Center, Yorktown Heights, N.Y. IBM, Thomas J. Watson Research Center, Yorktown Heights, NY 617 Space Research Astronomical Observatory, Groningen, Netherlands Space Research Astronomical Observatory, Groningen, Netherlands 618 Dominion Astrophysical Observatory, Victoria, British Columbia Canada Dominion Astrophysical Observatory, Victoria, British Columbia Canada Dominion Astrophysical Observatory, Victoria, British Columbia, Canada 619 Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ 620 Royal Greenwich Observatory, Madingley Road, Cambridge OB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge OB3 0EZ 621 Mount Wilson and Las Campanas Observatories, Pasadena, Calif. Mount Wilson and Las Campanas Observatories, Pasadena, Calif. Mount Wilson and Los Campanas Observatories, Pasadena, Calif. 622 Mt. Stromlo and Siding Spring Observatories, Canberra, Australia Mt. Stromlo and Siding Spring Observatories, Canberra, Australia 623 Mt. Wilson and Las Campanas Observatories, Pasadena, Calif. Mt. Wilson and Las Campanas Observatories, Pasadena, Calif. 624 Carnegie Institution of Washington, Observatories, La Serena, Chile Carnegie Institution of Washington, Observatories, La Serena, Chile 625 Nationa Radio Astronomy Observatory, Charlottesville, VA, US Nationa Radio Astronomy Observatory, Charlottesville, VA, US 626 Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain 627 Inst. de Astrofiscia de Canarias, La Laguna Tenerife, Spain Inst. de Astrofiscia de Canarias, La Laguna Tenerife, Spain 628 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France Institut de Radioastronomie Milimetrique, Saint-Martin-d'Heres, France Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, France Institut de Radioastronomie Millimetrique, Saint-Martin d'Heres, France Institut de Radioastronomie, Millimetrique, Saint-Martin-d'Heres, France 629 CERMO, Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France CERMO, Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 630 Inst. de Radio Astronomie Millimetrique, Saint Martin, France Inst. de Radio Astronomie Millimetrique, Saint Martin, France 631 Institut de Radioastronomie Milimetrique, St. Martin d'Heres, France Institut de Radio Astronomie Millimetrique, St. Martin d'Heres, France Institut de Radio Astronomie Millimetrique, St. Martine d'Heres, France Institut de Radioastronomie Millimetrique, St, Martin d'Heres, France Institut de Radioastronomie Milimetrique, St. Martin d'Heres, France Institut de Radioastronomie Millimetrique, St. Martin d'Heres, France 632 Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 633 Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK 634 University of Padova, Padova, Italy University of Padova, Padova, Italy 635 Torino, Osservatorio Astronomico, Turin, Italy Torino, Osservatorio Astronomico, Turin, Italy 636 University of British Columbia, Vancouver, B.C., Canada University of British Columbia, Vancouver, B.C., Canada 637 Observatoire du Mont Megantic, Notre-Dame-des-Bois, Canada Observatoire du Mont Megantic, Notre-Dame-des-Bois, Canada 638 Osservatorio Astronomico di Brera, Merate, Italy Osservatorio Astronomico di Brera, Merate, Italy 639 Merate, Osservatorio Astronomico, Merate, Italy Merate, Osservatorio Astronomico, Merate, Italy 640 University of Cambridge, Cambridge, UK University of Cambridge, Cambridge, UK 641 University of Helsinki, Finland University of Helsinki, Finland 642 Lawrence Livermore National Laboratory, Livermore, California, US Lawrence Livermore National Laboratory, Livermore, California, US 643 Scuola Internazionale Superiore di Studi Avanzati, Trieste Scuola Internazionale Superiore di Studi Avanzati, Trieste 644 Univ. of California at Los Angeles, Los Angeles, CA, US Univ. of California at Los Angeles, Los Angeles, CA, US 645 Osservatorio Astronomico di Torino, Pino Torinese, Italy Osservatorio Astronomico di Torino, Pino Torinese, Italy 646 University of Western Ontario, London, Ontario, Canada University of Western Ontario, London, Ontario, Canada 647 Jet Propulsion Laboratory at Cal Tech, Pasadena, CA, US Jet Propulsion Laboratory at Cal Tech, Pasadena, CA, US 648 Mt. Stromlo and Siding Spring Observatories, Private Bag, Australia Mt. Stromlo and Siding Spring Observatories, Private Bag, Australia 649 National Radio Astronomy Observatory, Charlottesville, VA 22901, USA National Radio Astronomy Observatory, Charlottesville, VA 22901, USA 650 National Radio Astronomy Observatory, Charlottesville, Virginia, US National Radio Astronomy Observatory, Charlottesville, Virginia, US 651 Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhys, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhnii Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR 652 Beograd, Astronomska Opservatorija, Belgrade, Yugoslavia Beograd, Astronomska Opservatorija, Belgrade, Yugoslavia 653 Cerro Tololo Interamerican Observatory, Casilla 603, La Serena, Chile Cerro Tololo Interamerican Observatory, Casilla 603, La Serena, Chile Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile 654 Max-Planck-Institut fur Radioastronomie, D-53010 Bonn, Germany Max-Planck-Institut fur Radioastronomie, D-53010 Bonn, Germany 655 Nat'l Radio Astronomy Observ., Charlottesville, VA, US Nat'l Radio Astronomy Observ., Charlottesville, VA, US 656 Dept. of Physics, Keele University, Keele, Staffordshire, ST5 5BG Dept. of Physics, Keele University, Keele, Staffordshire, ST5 5BG 657 Case Western Reserve University, Cleveland, Ohio Case Western Reserve University, Cleveland, Ohio 658 Cape Town, University, Cape Town, Republic of South Africa Cape Town, University, Cape Town, Republic of South Africa 659 Max-Planck-Institut fuer Radioastronomie, Bonn, W Max-Planck-Institut fuer Radioastronomie, Bonn, W 660 Department of Physics, Keele University, Keele, Staffordshire ST5 5BG, UK Department of Physics, Keele University, Keele, Staffordshire ST5 5BG, UK 661 Department of Physics, Keele University, Keele, Staffordshire ST5 5BG Department of Physics, Keele University, Keele, Staffordshire ST5 5BG 662 SISSA - International School for Advanced Studies, Trieste, Italy SISSA - International School for Advanced Studies, Trieste, Italy SISSA-International School for Advanced Studies, Trieste, Italy SISSA - International School of Advanced Studies, Trieste, Italy 663 Max-Planck-Inst. fuer Radiostronomie, Bonn, Germany Max-Planck-Inst. fuer Radiostronomie, Bonn, Germany Max-Planck Inst. fuer Radioastronomie, Bonn, Germany 664 International School for Advanced Studies (SISSA), Trieste, Italy International School for Advanced Studies (SISSA), Trieste, Italy 665 Stichting Radiostraling van Zon en Melkweg, Westerbork, Netherlands Stichting Radiostraling van Zon en Melkweg, Westerbork, Netherlands 666 Space Telescope Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Space Telescope Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 667 Max Planck Institut fuer Radioastronomie, Bonn, Germany Max Planck Institut fuer Radioastronomie, Bonn, Germany Max-Planck-Institut fuer Radioastronomie, Bonn, Germany 668 Max-Planck-Institut fuer Radioastronomy, Bonn, West Germany Max-Planck-Institut fuer Radioastronomy, Bonn, West Germany 669 Max Planck Inst. fuer Radioastronomie, Bonn, Germany Max Planck Inst. fuer Radioastronomie, Bonn, Germany Max-Planck-Inst. fuer Radioastronomie, Bonn, Germany 670 Joint Institute for Laboratory, Astrophysics, Boulder, CO Joint Institute for Laboratory, Astrophysics, Boulder, CO Joint Institute for Laboratory Astrophysics, Boulder, CO 671 CONICET, Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina CONICET, Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 672 Lawrence Livermore National Laboratory, Livermore, CA 94550, USA Lawrence Livermore National Laboratory, Livermore, CA 94550, USA 673 University College London, London, England, UK University College London, London, England, UK 674 Univ. of Maryland, University Park, MD, US Univ. of Maryland, University Park, MD, US 675 University College, Galway, Ireland University College, Galway, Ireland 676 University of Cambridge, Cambridge, England, UK University of Cambridge, Cambridge, England, UK 677 Argonne National Laboratory, Argonne, Ill. Argonne National Laboratory, Argonne, Ill. 678 Aerospace Corporation, Los Angeles, CA, US Aerospace Corporation, Los Angeles, CA, US 679 University of California, Los Angeles, CA, US University of California, Los Angeles, CA, US 680 University College London, London, UK University College London, London, UK 681 University of Calgary, Calgary, Canada University of Calgary, Calgary, Canada 682 Jet Propulsion Laboratory, Pasadena, California, US Jet Propulsion Laboratory, Pasadena, California, US 683 Turku University Observatory, Tuorla, 21500 Piikkio, Finland Turku University Observatory, Tuorla, 21500 Piikkio, Finland 684 Carnegie Inst. of Washington, Observatories, Pasadena, CA Carnegie Inst. of Washington, Observatories, Pasadena, CA 685 Universidad Catolica de Chile, Casilla Universidad Catolica de Chile, Casilla 686 University of California, Santa Cruz, Santa Cruz, CA, US University of California, Santa Cruz, Santa Cruz, CA, US 687 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ 688 Institute of Space and Astronautical Science, Sagamihara 229, Japan Institute of Space and Astronautical Science, Sagamihara 229, Japan 689 Inst. of Space and Astronautical Science, Sagamihara, Japan Inst. of Space and Astronautical Science, Sagamihara, Japan 690 Inst. of Space and Astronautical Science, Kanagawa, Japan Inst. of Space and Astronautical Science, Kanagawa, Japan 691 Institute of Space and Astronautical Sciences, Kanagawa, Japan Institute of Space and Astronautical Sciences, Kanagawa, Japan Institute of Space and Astronautical Science, Kanagawa, Japan 692 Institute of Space and Astronomical Science, Sagamihara, Japan Institute of Space and Astronomical Science, Sagamihara, Japan 693 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK 694 Institute of Space Astronautical Science, Sagamihara, Kanagawa, Japan Institute of Space Astronautical Science, Sagamihara, Kanagawa, Japan 695 Inst. of Space and Astronautical science, Sagamihara, Kanagawa, Japan Inst. of Space and Astronautical science, Sagamihara, Kanagawa, Japan Inst. of Space and Astronautical Science, Sagamihara, Kanagawa, Japan 696 Nat. Radio Astronomy Obser., Charlottesville, VA, US Nat. Radio Astronomy Obser., Charlottesville, VA, US Nat. Radio Astronomy Observ., Charlottesville, VA, US 697 Max-Planck-Institut fueu Radioastronomie, Bonn, Germany Max-Planck-Institut fueu Radioastronomie, Bonn, Germany 698 The Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA The Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA 699 Observatories of the Carnegie Institution, Pasadena, CA Observatories of the Carnegie Institution, Pasadena, CA 700 U.S. Navy, Center for Advanced Space Sensing, Washington, DC U.S. Navy, Center for Advanced Space Sensing, Washington, DC 701 University of Manchester Institute of Science and Technology, England University of Manchester Institute of Science and Technology, England 702 Universidad Nacional Autonoma de Mexico, Mexico City, Mexico Universidad Nacional Autonoma de Mexico, Mexico City, Mexico Universidad Nacional Autonoma de Meico, Mexico City, Mexico 703 Los Alamos National Laboratory, Los Alamos, New Mexico, US Los Alamos National Laboratory, Los Alamos, New Mexico, US 704 Universidad Nacional Autonoma de Mexico, Villa Obregon, Mexico Universidad Nacional Autonoma de Mexico, Villa Obregon, Mexico Universidad Nacional Autonoma de Mexico, Villa Obregon Mexico 705 Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico Universidad Nacional Autonoma de Mexico, Coyacan, Mexico Universidad National Autonoma de Mexico, Coyoacan, Mexico Universidad Nacional Autonoma de Mexico, Cocoyacan, Mexico 706 SRON, Laboratory for Space Research, Leiden, Netherlands SRON, Laboratory for Space Research, Leiden, Netherlands 707 Lockheed Space Sciences Laboratory, Palo Alto, CA Lockheed Space Sciences Laboratory, Palo Alto, CA 708 IBM Thomas J. Watson Research Center, Yorktown Heights, NY, US IBM Thomas J. Watson Research Center, Yorktown Heights, NY, US 709 London, University, College, Dorking, Surrey, England London, University, College, Dorking, Surrey, England 710 Technion-Israel Institute of Technology, Haifa, Israel Technion-Israel Institute of Technology, Haifa, Israel Technion Israel Institute of Technology, Haifa, Israel Technion - Israel Institute of Technology, Haifa, Israel 711 Victoria University, Wellington, New Zealand Victoria University, Wellington, New Zealand 712 Lab. for Space Research, Utrecht, Netherlands Lab. for Space Research, Utrecht, Netherlands 713 Radio Observatory, Dwingeloo, Netherlands Radio Observatory, Dwingeloo, Netherlands 714 Utrecht Observatory, Utrecht Netherlands Utrecht Observatory, Utrecht Netherlands 715 Observatoire du Mont Megantic, Sainte-Foy, Canada Observatoire du Mont Megantic, Sainte-Foy, Canada Observatoire du Mont Megantic, Sainte Foy, Canada 716 Physical Research Laboratory, Ahmedabad, India Physical Research Laboratory, Ahmedabad, India 717 Groningen, Rijksuniversiteit, Netherlands Groningen, Rijksuniversiteit, Netherlands 718 Observatorio Nacional, Sao Cristovao, Rio de Janeiro, Brazil Observatorio Nacional, Sao Cristovao, Rio de Janeiro, Brazil 719 Joint Inst. for Laboratory Astrophysics, Boulder, CO Joint Inst. for Laboratory Astrophysics, Boulder, CO 720 Instituto de Pesquisas Espaciais, Sao Josedos Campos, Brazil Instituto de Pesquisas Espaciais, Sao Josedos Campos, Brazil Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Brazil 721 Observatorio Nacional do Brasil, Sao Cristovao, Brazil Observatorio Nacional do Brasil, Sao Cristovao, Brazil 722 Lawrence Livermore National Lab., Livermore, CA, US Lawrence Livermore National Lab., Livermore, CA, US 723 Univ. of California at San Diego, La Jolla, CA, US Univ. of California at San Diego, La Jolla, CA, US 724 University College, London, England University College, London, England University College London, England University, College, London, England 725 Universite Laval, Sainte-Foy Universite Laval, Sainte-Foy 726 Los Alamos National Lab., Los Alamos, NM, US Los Alamos National Lab., Los Alamos, NM, US 727 Institute for Advanced Study, Princeton, NJ Institute for Advanced Study, Princeton, NJ Institute for Advanced Study, Princeton, N.J. Institute for Advanced study, Princeton, NJ Institute for Advanced Study Princeton, NJ 728 British Columbia Univ., Vancouver, Canada British Columbia Univ., Vancouver, Canada 729 Canada-France-Hawaii Telescope Corp., HI, US Canada-France-Hawaii Telescope Corp., HI, US 730 University of Virginia, Charlottesville, Virginia, US University of Virginia, Charlottesville, Virginia, US 731 University of Florida, Gainesville, FL, US University of Florida, Gainesville, FL, US 732 Universidad de Los Andes, Merida, Venezuela Universidad de Los Andes, Merida, Venezuela Universidad de los Andes, Merida, Venezuela 733 Carnegie Institution of Washington, Washingon, DC, US Carnegie Institution of Washington, Washingon, DC, US 734 Carnegie Institute of Washington, Washington, DC, US Carnegie Institute of Washington, Washington, DC, US 735 Univ. of New York, Courtland, NY, US Univ. of New York, Courtland, NY, US 736 Yale Univ. Observatory, New Haven, CT Yale Univ. Observatory, New Haven, CT 737 Indian Institute of Astrophysics, Kodaikanal, India Indian Institute of Astrophysics, Kodaikanal, India 738 ESA, Satellite Tracking Station, Madrid, Spain ESA, Satellite Tracking Station, Madrid, Spain 739 Universitaets, Sternwarte, Goettingen, West Germany Universitaets, Sternwarte, Goettingen, West Germany 740 University of Waterloo, Waterloo, Ontario, Canada University of Waterloo, Waterloo, Ontario, Canada 741 Observatories of the Carnegie Institution, Pasadena Observatories of the Carnegie Institution, Pasadena 742 Univ. of Toronto, Toronto, Ontario, CA Univ. of Toronto, Toronto, Ontario, CA 743 Lockheed Research Laboratories, Palo, Alto, CA Lockheed Research Laboratories, Palo, Alto, CA 744 Univ. of Southern Calif., Los Angeles, CA, US Univ. of Southern Calif., Los Angeles, CA, US 745 Univ. of Calgary, Calgary, Alberta, Canada Univ. of Calgary, Calgary, Alberta, Canada 746 Andalucia, Inst. de Astrofisica Andalucia, Inst. de Astrofisica 747 Leiden Sterrewacht, Leiden, Netherlands Leiden Sterrewacht, Leiden, Netherlands Leiden Sterrenwacht, Leiden, Netherlands Leyden, Sterrewacht, Leiden, Netherlands 748 Univ. of Rome I, Rome, Italy Univ. of Rome I, Rome, Italy 749 Osservatorio Astronomico Nacional, Ensenada, Mexico Osservatorio Astronomico Nacional, Ensenada, Mexico Observatorio Astronomico Nacional, Ensenada, Mexico 750 Torino, Osservatorio Astronomico, Pino Torinese Torino, Osservatorio Astronomico, Pino Torinese 751 National Radio Astronomy, Observatory, Socorro, NM National Radio Astronomy, Observatory, Socorro, NM 752 Osservatorio Astronomico de Brera, Milan, Italy Osservatorio Astronomico de Brera, Milan, Italy Osservatorio Astronomico de Brera, Milano, Italy 753 Observatorio do Valongo, Rio de Janeiro, Brazil Observatorio do Valonogo, Rio de Janeiro, Brazil Observatorio do Valongo, Rio de Janeiro, Brazil Observatorio de Valongo, Rio de Janeiro, Brazil 754 Osservatorio Astronomico di Roma, Rome, Italy Osservatorio Astronomico di Roma, Rome, Italy 755 Osservatorio Astronomico di Brera, Milan Osservatorio Astronomico di Brera, Milan 756 Oak Ridge National Laboratory, TN Oak Ridge National Laboratory, TN 757 Royal University Observatory, Lund, Sweden Royal University Observatory, Lund, Sweden 758 Osservatorio Astronomico, Pino Torinese, Italy Osservatorio Astronomico, Pino Torinese, Italy 759 Aegean University Observatory, Izmir, Turkey Aegean University Observatory, Izmir, Turkey 760 Turku University Observatory, Piikio, Finland Turku University Observatory, Piikio, Finland 761 U.S. Naval Observatory, Flagstaff, Ariz. U.S. Naval Observatory, Flagstaff, Ariz. 762 High Altitude Observatory, Boulder, CO, US High Altitude Observatory, Boulder, CO, US 763 Yale University Observatory, New Haven Conn. Yale University Observatory, New Haven Conn. 764 Ege University Observatory, Bornova, Turkey Ege University Observatory, Bornova, Turkey 765 Ege University Observatory, Izmir, Turkey Ege University Observatory, Izmir, Turkey 766 Warner & Swasey Observatory, Cleveland, OH Warner & Swasey Observatory, Cleveland, OH 767 Royal Greenich Observatory, Cambridge, UK Royal Greenich Observatory, Cambridge, UK 768 Nat. Radio Astronomy Observatory, Socorro, NM, US Nat. Radio Astronomy Observatory, Socorro, NM, US 769 Astronomiczne Obserwatorium, Warsaw, Poland Astronomiczne Obserwatorium, Warsaw, Poland 770 Royal University Observatory, Lund Royal University Observatory, Lund 771 Stockholm Observatory, Stockholm, Sweden Stockholm Observatory, Stockholm, Sweden 772 Kapteyn Observatory, Roden, Netherlands Kapteyn Observatory, Roden, Netherlands 773 Warsaw Univ. Observatory, Warszawa, Poland Warsaw Univ. Observatory, Warszawa, Poland Warsaw Univ. Observatory, Warsaw, Poland 774 Indian Institute for Astrophysics, Bangalore, India Indian Institute for Astrophysics, Bangalore, India Indian Institute of Astrophysics, Bangalore, India 775 Wesleyan University, Middletown, CT Wesleyan University, Middletown, CT 776 Space Telescope Inst., Baltimore, MD, US Space Telescope Inst., Baltimore, MD, US 777 Meudon, Observatoire, Meudon, Haute-de-Seine, France Meudon, Observatoire, Meudon, Haute-de-Seine, France Meudon, Observatoire, Meudon, Hauts-de-Seine France Meudon, Observatoire, Meudon, Haute-de-Seine, France Meudon, Observatoire, Meudon, Hauts-de-Seine France 778 Stockholm Observatory, Salsjobaden, Sweden Stockholm Observatory, Saltsjoebaden, Sweden Stockholm Observatory, Salsjobaden, Sweden Stockholm Observatory, Saltsjobaden, Sweden 779 Carter Observatory, Wellington, New Zealand Carter Observatory, Wellington, New Zealand 780 Armagh Observatory, Armagh, N. Ireland, UK Armagh Observatory, Armagh, N. Ireland, UK 781 Strasbourg, Observatoire, Strasbourg, France Strasbourg, Observatoire, Strasbourg, France 782 Pic du Midi, Observatoire, Toulouse, France Pic du Midi, Observatoire, Toulouse, France Pic-du-Midi, Observatoire, Toulouse, France 783 Besancon, Observatoire, Besancon, France Besancon, Observatoire, Besancon, France 784 Lyon, Observatoire, Saint-Genis-Laval, Rhone Lyon, Observatoire, Saint-Genis-Laval, Rhone 785 Lyon, Observatoire, Saint Genis-Laval, France Lyon, Observatoire, Saint-Genis Laval, France Lyon, Observatoire, Saint Genis-Laval, France Lyon Observatoire, Saint-Genis-Laval, France Lyon, Observatoire, Saint-Genis Laval, France Lyon, Observatoire, Saint Genis-Laval, France Lyon Observatoire, Saint-Genis-Laval, France 786 Tartu Astrophysical Observatory, EE2444 Toravere, Estonia Tartu Astrophysical Observatory, EE2444 Toravere, Estonia Tartu Astrophysical Observatory, EE-2444 Toravere, Estonia 787 Osservatorio Astronomico di Trieste, Trieste, Italy Osservatorio Astronomico di Trieste, Trieste, Italy 788 Anglo-Australian Observatory, Epping, New S. Wales, Australia Anglo-Australian Observatory, Epping, New S. Wales, Australia 789 Louisiana State University, Observatory, Baton Rouge, LA Louisiana State University, Observatory, Baton Rouge, LA 790 Muenchen, Universitaetssternwarte, Munich, West Germany Muenchen, Universitaetssternwarte, Munich, West Germany Muenchen, Universitaets-Sternwarte, Munich, West Germany 791 Universitaetssternwarte, Munich, West Germany Universitaetssternwarte, Munich, West Germany 792 Universitaets-Sternwarte, Munich, Germany Universitaets-Sternwarte, Munich, Germany 793 European Southern Observatory, Casilla, Chile European Southern Observatory, Casilla, Chile 794 Arecibo Ionospheric Observatory, Arecibo, P.R. Arecibo Ionospheric Observatory, Arecibo, P.R. 795 David Dunlap Observatory, Toronto, Ontario, Canada David Dunlap Observatory, Toronto, Ontario, Canada 796 Osservatorio Astronomico di Brera I-22055, Merate, Italy Osservatorio Astronomico di Brera I-22055, Merate, Italy 797 Observatorio Astronomico Nacional, Cerro Calan, Chile Observatorio Astronomico Nacional, Cerro Calan, Chile 798 Australia Telescope National Facility, CSIRO, Epping 2121, Australia Australia Telescope National Facility, CSIRO, Epping 2121, Australia 799 CSIC, Instituto de Astrofisica de Canarias, La Laguna, Spain CSIC, Instituto de Astrofisica de Canarias, La Laguna, Spain 800 Institute de Astrofisca de Canarias, Tensrife, Spain Institute de Astrofisca de Canarias, Tensrife, Spain Instituto de Astrofisca de Canarias, Tenerife, Spain 801 Instituto de Astrofisica de Carnarias, Tenerife, Spain Instituto de Astrofisica de Carnarias, Tenerife, Spain Instituto de Astrofisica de Canarias, Tenerife, Spain 802 Ministerio de Educacion, Instituto Isaac Newton, Santiago, Chile Ministerio de Educacion, Instituto Isaac Newton, Santiago, Chile 803 Laboratoire d'Astronomie spatiale du CNRS, Marseille, France Laboratoire d'Astronomie spatiale du CNRS, Marseille, France 804 CNRS, Laboratoire d'Astronomie Spatiale, Marseille, France CNRS, Laboratoire d'Astronomie Spatiale, Marseilles, France CNRS, Laboratoire D'Astronomie Spatiale, Marseille, France CNRS, Laboratoire d'Astronomie Spatiale, Marseille, France 805 Zuerich, Eidgenoessische Technische Hochschule, Zurich Zuerich, Eidgenoessische Technische Hochschule, Zurich 806 Anglo-Australian Telescope, Epping, Australia Anglo-Australian Telescope, Epping, Australia 807 National Radio Astronomy Observatory, Soccoro, NM, US National Radio Astronomy Observatory, Soccoro, NM, US 808 Brookhaven National Lab., Upton, NY, US Brookhaven National Lab., Upton, NY, US 809 Joint Astronomy Centre, Hilo, HI, US Joint Astronomy Centre, Hilo, HI, US Joint Astronomy Center, Hilo, HI, US 810 National Radio Astronomy Observatory, Socorro, N. Mex. National Radio Astronomy Observatory, Socorro, N. Mex. National Radio Astronomy Observatory, Soccoro, N. Mex. 811 National Astronomy and Ionosphere Center National Astronomy and Ionosphere Center 812 Iowa State University of Science and Technology, AMES Iowa State University of Science and Technology, AMES 813 Iowa State University of Science and Technology Iowa State University of Science and Technology 814 Louisiana State University Observatory, Baton Rouge, La. Louisiana State University Observatory, Baton Rouge, La. 815 National Astronomy Observatory, Mitaka, Japan National Astronomy Observatory, Mitaka, Japan 816 Warner and Swasey Observatory, Cleveland, Ohio Warner and Swasey Observatory, Cleveland, Ohio 817 Krymskaia Astrofizicheskaia Observatoriia, Simeiz, USSR Krymskaia Astrofizicheskaia Observatoriia, Simeiz, USSR 818 Royal Greenwich Observatory, Cambridge, England, UK Royal Greenwich Observatory, Cambridge, England, UK 819 Royal Greenwich Observatory, Herstmonceux, Sussex Royal Greenwich Observatory, Herstmonceux, Sussex 820 California Inst. of Technology, Pasadena, CA, US California Inst. of Technology, Pasadena, CA, US 821 California Inst. of Technology, Pasadena California Inst. of Technology, Pasadena 822 David Dunlap Observatory, Richmond Hill, Ontario, Canada David Dunlap Observatory, Richmond Hill, Ontario, Canada David Dunlap Observatroy, Richmond Hill, Ontario, Canada David Dunlop Observatory, Richmond Hill, Ontario, Canada David Dunlap Observatory, Richmond Hills, Ontario, Canada 823 Carter Observatory, PO Box 2909, Wellington, New Zealand Carter Observatory, PO Box 2909, Wellington, New Zealand 824 Louisiana State University, Baton Rouge, LA, US Louisiana State University, Baton Rouge, LA, US 825 University of Maryland, College Park, Maryland, US University of Maryland, College Park, Maryland, US 826 Leuven, Katholieke Universiteit, Heverlee, Belgium Leuven, Katholieke Universiteit, Heverlee, Belgium Leuven, Katholieke Universiteir, Heverlee, Belgium 827 Astronomical Observatory, Belgrade, Serbia Astronomical Observatory, Belgrade, Serbia 828 Univ. Nacional Autonoma de Mexico, Mexico City, Mexico Univ. Nacional Autonoma de Mexico, Mexico City, Mexico 829 Laboratorie d'Astronomie Spatiale, Marseille, France Laboratorie d'Astronomie Spatiale, Marseille, France 830 Canada-France-Hawaii Telescope Corp., Kamulea, Hawaii Canada-France-Hawaii Telescope Corp., Kamulea, Hawaii 831 Groningen, Rijksuniversiteit, Groningen, Netherlands Groningen, Rijksuniversitaet, Groningen, Netherlands Groningen, Rijksuniversitet, Groningen, Netherlands Groningen Rijksuniversiteit, Groningen, Netherlands Groningen, Rijksuniversiteit, Groningen, Netherlands Groningen, Rijksuniversteit, Groningen, Netherlands Groningen Rijksuniversiteit, Groningen, Netherlands Groningen, Rijksuniversiteit, Groningen, Netherlands Groningen, Rijksuniversteit, Groningen, Netherlands 832 Yebes, Centro Astronomico, Guadalajara, Spain Yebes, Centro Astronomico, Guadalajara, Spain 833 California, University, Davis and Livermore California, University, Davis and Livermore 834 California, University, Irvine and Berkeley California, University, Irvine and Berkeley 835 Institute for Advanced Study, Princeton, New Jersey, US Institute for Advanced Study, Princeton, New Jersey, US 836 Southern California, University, Los Angeles Southern California, University, Los Angeles 837 Tartu Astronomical Observatory, Tartu, Estonian SSR Tartu Astronomical Observatory, Tartu, Estonian SSR 838 Arcetri, Osservatorio Astrofisico, Flor Arcetri, Osservatorio Astrofisico, Flor 839 Lockheed Solar Observatory, Palo Alto, Calif. Lockheed Solar Observatory, Palo Alto, Calif. 840 Lockheed Solar Observatory, Palo Alto, CA Lockheed Solar Observatory, Palo Alto, CA 841 European Southern Observatory, La Silla, Chile European Southern Observatory, La Silla, Chile 842 European Southern Observatory, La Serena, Chile European Southern Observatory, La Serena, Chile 843 Stockholm Observatory, S-13336 Saltsjobaden, Sweden Stockholm Observatory, S-13336 Saltsjobaden, Sweden Stockholm Observatory, S-133 36 Saltsjobaden, Sweden Stockholm Observatory, S-133 36, Saltsjobaden, Sweden 844 Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR 845 California Inst. of Technology, Pasadena, CA California Inst. of Technology, Pasadena, CA 846 British Columbia, University, Victoria, Canada British Columbia, University, Victoria, Canada 847 Owens Valley Radio Observatory, Pasadena, Calif. Owens Valley Radio Observatory, Pasadena, Calif. Owens Valley Radio Observatory, Pasadena, Calif, Owens Valley Radio Observatory, Pasadena, Calif Owens Valley Radio Observatory, Padadena, Calif. 848 Cerro Tololo Inter-American Observatory, La Serena, Chile Cerro-Tololo Inter-American Observatory, La Serena, Chile Cerro-Tololo Interamerican Observatory, La Serena, Chile Cerre Tololo Inter-American Observatory, La Serena, Chile Cerro Tololo Inter-American Observatory, La Serena, Chile Cerro Tololo Interamerican Observatory, La Serena, Chile Cerro Tollo Inter-American Observatory, La Serena, Chile Cerro Tololo Inter-Americn Observatory, La Serena, Chile 849 Pennsylvania State university, University Park Pennsylvania State university, University Park Pennsylvania State University, University, Park 850 David Dunlap Observatory, Richmond Hill, Ontario David Dunlap Observatory, Richmond Hill, Ontario 851 Uttar Pradesh State Observatory, Nainital, India Uttar Pradesh State Observatory, Naintal, India Uttar Pradesh State Observatory, Nainital, India Utter Pradesh State Observatory, Nainital, India Uttar Pradesh State Observatory, Naintal, India Uttar Pradesh State Observatory, Nainital, India Utter Pradesh State Observatory, Nainital, India 852 European Southern Observatory, Santiago, Chili European Southern Observatory, Santiago, Chili 853 Leuven, Katholieke Universiteit, Leuven, Belgium Leuven, Katholieke Universiteit, Leuven, Belgium 854 Brussel, Vrije Universiteit , Brussels, Belgium Brussel, Vrije Universiteit , Brussels, Belgium 855 Astronomisk Observatorium, Tollose, Denmark Astronomisk Observatorium, Tollose, Denmark 856 Astronomiska Observatoriet, Uppsala, Sweden Astronomiska Observatoriet, Uppsala, Sweden Astronomiska observatoriet, Uppsala, Sweden Astronomska Observatoriet, Uppsala, Sweden Astronomiska Observatoriet, Upssala, Sweden 857 Washington State University, Pullman, WA Washington State University, Pullman, WA 858 The Aerospace Corporation, Los Angeles, CA, US The Aerospace Corporation, Los Angeles, CA, US 859 California State University, Los Angeles California State University, Los Angeles 860 California, University, Los Alamos California, University, Los Alamos 861 California, University, Los Angeles California, University, Los Angeles California, University Los Angeles 862 California State University, Northridge, CA California State University, Northridge, CA 863 University of Arizona, Tucson, AZ, US University of Arizona, Tucson, AZ, US University of Arizona, Tuscon, AZ, US 864 University Observatory, Oxford, England University Observatory, Oxford, England 865 Leuven, Katholieke Univ., Heverlee, Belgium Leuven, Katholieke Univ., Heverlee, Belgium 866 David Dunlap Observatory, Richmond Hill, Canada David Dunlap Observatory, Richmond Hill, Canada 867 USAF, Geophysics Laboratory, Bedford, MA USAF, Geophysics Laboratory, Bedford, MA 868 Groningen, Rijksuniversiteit, Groningen, West Germany Groningen, Rijksuniversiteit, Groningen, West Germany 869 Cape Town, University, Rondebosch, South Africa Cape Town, University, Rondebosch, South Africa 870 Owens Valley Radio Observatory, Big Pine, Calif. Owens Valley Radio Observatory, Big Pine, Calif. 871 Roma, Osservatorio Astronomico, Monteporzio Catone, Italy Roma, Osservatorio Astronomico, Monteporzio Catone, Italy 872 Osservatorio Astronomico, Roma, Italy Osservatorio Astronomico, Roma, Italy 873 Osservatorio Astronomico di Roma, Italy Osservatorio Astronomico di Roma, Italy 874 United States Naval Observatory, Washington, DC, US United States Naval Observatory, Washington, DC, US 875 Massachusetts Inst. of Technology, Cambridge, MA, US Massachusetts Inst. of Technology, Cambridge, MA, US Massachusetts Inst.of Technology, Cambridge, MA, US 876 California, University, Davis and Livermore, CA California, University, Davis and Livermore, CA 877 Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukraine Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukraine 878 Institute for Advanced Study, Princeton, NJ 08540, USA Institute for Advanced Study, Princeton, NJ 08540, USA 879 British Columbia Univ., Vancouver, BC, Canada British Columbia Univ., Vancouver, BC, Canada 880 CASS, California Univ. San Diego, La Jolla, CA, US CASS, California Univ. San Diego, La Jolla, CA, US 881 Univ. of California San Diego, La Jolla, CA, US Univ. of California San Diego, La Jolla, CA, US 882 NOAO, Tucson, AZ, US NOAO, Tucson, AZ, US NRAO, Tucson, AZ, US 883 Univ. of Oxford, Oxford, UK Univ. of Oxford, Oxford, UK 884 Argonne National Laboratory, IL Argonne National Laboratory, IL 885 Joint Inst. for Laboratory Astrophysics, Boulder, CO, US Joint Inst. for Laboratory Astrophysics, Boulder, CO, US 886 Tokyo Astronomical Observatory, Nagano, Japan Tokyo Astronomical Observatory, Nagano, Japan 887 Univ. Laval, Quebec, Quebec, Canada Univ. Laval, Quebec, Quebec, Canada 888 NASA-IRTF, Honolulu, HI, US NASA-IRTF, Honolulu, HI, US 889 Univ. Laval,Quebec, Canada Univ. Laval,Quebec, Canada 890 California, University, Los Angeles, CA California, University, Los Angeles, CA 891 Tokyo Astronomical Observatory, Mitaka Tokyo Astronomical Observatory, Mitaka 892 Turku University Observatory, Piikkio, Finland Turku University Observatory, Piikkio, Finland Turku University Observatory, Pikkio, Finland Turku University Observatory, Piikkio, Finland Turku University Observatory, Pikkio, Finland 893 California, University, Los Alamos, NM California, University, Los Alamos, NM 894 Turku University Observatory, Tuorla, Finland Turku University Observatory, Tuorla, Finland Turku University, Observatory, Tuorla, Finland 895 Carnegie Observatories, La Serena, Chile Carnegie Observatories, La Serena, Chile 896 Mullard Radio Astronomy Obsrevatory, Cambridge, England, UK Mullard Radio Astronomy Obsrevatory, Cambridge, England, UK 897 Nat. Radio Astron. Observatory, Socorro, NM, US Nat. Radio Astron. Observatory, Socorro, NM, US 898 Astronomska Observatorija, Belgrade, Yugoslavia Astronomska Observatorija, Belgrade, Yugoslavia 899 National Optical Astronomy Observatory, Tucson, AZ, US National Optical Astronomy Observatory, Tucson, AZ, US 900 National Radio Observatory, Socorro, NM, US National Radio Observatory, Socorro, NM, US 901 National Optical Astronomy Observatories, Tucson, AZ, US National Optical Astronomy Observatories, Tucson, AZ, US National Opitical Astronomy Observatories, Tucson, AZ, US 902 National Optical Astronomy Observatories, Tucson, Arizona, US National Optical Astronomy Observatories, Tucson, Arizona, US 903 National Opical Astronomy Observatories, La Serena, Chile National Opical Astronomy Observatories, La Serena, Chile 904 U.S. Navy, Naval Observatory, Washington, DC U.S. Navy, Naval Observatory, Washington, DC 905 National Astronomical Observatory, Minamimaki, Nagano, Japan National Astronomical Observatory, Minamimaki, Nagano, Japan 906 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, CB3 0HA Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, CB3 0HA 907 CNR, Istituto di Fisica dello Spazio Interplanetario, Rome, Italy CNR, Istituto di Fisica dello Spazio Interplanetario, Rome, Italy 908 Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Josedos Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Josedas Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Jose-dos-Campos, Sao Paulo, Brazil 909 Ministerio de Educacion de Chile, Inst. Issac Newton, Santiago Ministerio de Educacion de Chile, Inst. Issac Newton, Santiago 910 Space Research Astronomical Observatory, Utrecht, Netherlands Space Research Astronomical Observatory, Utrecht, Netherlands 911 Laboratory for Space Research, Groningen, Netherlands Laboratory for Space Research, Groningen, Netherlands 912 National Astronomical Observatory of Japan, Tokyo, Japan National Astronomical Observatory of Japan, Tokyo, Japan 913 Los Alamos National Laboratory, Los Alamos, NM, US Los Alamos National Laboratory, Los Alamos, NM, US 914 Centro Astronomico de Yebes (IGN), Guadalajara, Spain Centro Astronomico de Yebes (IGN), Guadalajara, Spain 915 Sacramento Peak National Observatory, Sunspot, NM Sacramento Peak National Observatory, Sunspot, NM 916 Univ. of Warsaw Observatory, Warsaw, Poland Univ. of Warsaw Observatory, Warsaw, Poland 917 Tokyo Astronomical Observatory, Tokyo, Japan Tokyo Astronomical Observatory, Tokyo, Japan 918 National Astronomical Observatory, Ohsawa, Japan National Astronomical Observatory, Ohsawa, Japan 919 National Astronomical Observatory, Mitaka, Tokyo 181, Japan National Astronomical Observatory, Mitaka, Tokyo 181, Japan 920 SRON, Lab. for Space Research, Groningen, Netherlands SRON, Lab. for Space Research, Groningen, Netherlands 921 Tokyo Astronomical Observatory, Mitaka, Tokyo, Japan Tokyo Astronomical Observatory, Mitaka, Tokyo, Japan 922 National Astronomical Observatory, Mitana, Tokyo, Japan National Astronomical Observatory, Mitana, Tokyo, Japan National Astronomical Observatory, Mitaka, Tokyo, Japan 923 Bruxelles, Univ. Libre, Brussels, Belgium Bruxelles, Univ. Libre, Brussels, Belgium 924 University Observatory, Warsaw, Poland University Observatory, Warsaw, Poland 925 Ohio State Univ., Columbus Ohio State Univ., Columbus 926 Leuven, Katholieke Univ., Louvain, Belgium Leuven, Katholieke Univ., Louvain, Belgium 927 Armagh Observatory, Armagh, N. Ireland Armagh Observatory, Armagh, N. Ireland 928 Service d'Aeronomie, Verrieres-le-Buisso, France Service d'Aeronomie, Verrieres-le-Buisso, France 929 Warsaw University Observatory, Poland Warsaw University Observatory, Poland 930 CNR, Laboratorio di Radioastronomia CNR, Laboratorio di Radioastronomia 931 Arcetri Osservatorio Astrofisico Arcetri Osservatorio Astrofisico 932 Armagh Observatory, Armagh, Ireland Armagh Observatory, Armagh, Ireland 933 U.S. Naval Observatory, Washington, DC U.S. Naval Observatory, Washington, DC U.S. Naval Observatory, Washington, D.C. 934 Five College Radio Observatory, Amherst, MA Five College Radio Observatory, Amherst, MA 935 Sommers-Bausch Observatory, Boulder, CO Sommers-Bausch Observatory, Boulder, CO 936 Hight Altitude Observatory, Boulder, CO Hight Altitude Observatory, Boulder, CO High Altitude Observatory, Boulder, Co 937 Kiev State Univ., Ukraine Kiev State Univ., Ukraine 938 Roma, Osservatorio Astronomico, Monte Porzio, Italy Roma, Osservatorio Astronomico, Monte Porzio, Italy 939 Osservatorio Astronomico di Torino, Torinese, Italy Osservatorio Astronomico di Torino, Torinese, Italy 940 Centro Astronomico Hispano Aleman, Spain Centro Astronomico Hispano Aleman, Spain 941 Stockholm Observatory, Saltsjobaden Stockholm Observatory, Saltsjobaden 942 U. S. Naval Observatory, Washington, DC U. S. Naval Observatory, Washington, DC 943 Pace Observatory, Pleasantville, NY, US Pace Observatory, Pleasantville, NY, US 944 Armagh Observatory, Armagh, Ireland, UK Armagh Observatory, Armagh, Ireland, UK 945 Meudon, Observatoire, Meudon, Hauts-de-Seine, France Meudon, Observatoire, Meudon, Hauts-de-Seine, France 946 Armagh Observatory, Northern Ireland, UK Armagh Observatory, Northern Ireland, UK 947 Stockholms Observatorium, Saltsjobaden, Sweden Stockholms Observatorium, Saltsjobaden, Sweden Stockholm, Observatorium, Saltsjobaden, Sweden Stockholm Observatorium, Saltsjobaden, Sweden Stockholms Observatorium,Saltsjobaden, Sweden 948 Bordeaux I, Observatoire, Floirac, France Bordeaux I, Observatoire, Floirac, France 949 Cote d'Azur, Observatoire, Grasse, France Cote d'Azur, Observatoire, Grasse, France 950 Exosat Observatory, Leiden, Netherlands Exosat Observatory, Leiden, Netherlands 951 David Dunlap Laboratory, Richmond Hill, Canada David Dunlap Laboratory, Richmond Hill, Canada 952 Univ. de lausanne, Chavannes-des-Bois, Switzerland Univ. de lausanne, Chavannes-des-Bois, Switzerland 953 Warner and Swasey Observatory, East Cleveland Warner and Swasey Observatory, East Cleveland 954 Univ. of British Columbia, Vancouver, BC, Canada Univ. of British Columbia, Vancouver, BC, Canada 955 European Southern Observatory, Munich, Germany European Southern Observatory, Munich, Germany 956 Pic-du-Midi et de Toulouse, Observatoires, Toulouse, France Pic-du-Midi et de Toulouse, Observatoires, Toulouse, France 957 Univ. of British Columbia, Victoria, BC, Canada Univ. of British Columbia, Victoria, BC, Canada 958 Observatorio Astronomico di Collurania, Teramo, Italy Observatorio Astronomico di Collurania, Teramo, Italy 959 Pic-du-Midi et Toulouse, Observatoires, Toulouse, France Pic-du-Midi et Toulouse, Observatoires, Toulouse, France Pic du Midi et Toulouse, Observatoires, Toulouse, France Pic-du-Midi et Toulouse, Observatories, Toulouse, France Pic-du-Midi et Toulouse, Observatoire, Toulouse, France Pic-du-Midi et Toulouse, Observatoires, Tolouse, France 960 Inst. de Astrophisica de Canarias, Tenerife, Spain Inst. de Astrophisica de Canarias, Tenerife, Spain Inst. de Astrofisica de Canarias, Tenerife, Spain 961 Osservatorio Astronomico de Monte Mario, Rome, Italy Osservatorio Astronomico de Monte Mario, Rome, Italy 962 Osservatorio Astronomico di Roma, Monteporzio, Italy Osservatorio Astronomico di Roma, Monteporzio, Italy 963 Napoli, Osservatorio Astronomico, Naples, Italy Napoli, Osservatorio Astronomico, Naples, Italy 964 Laboratoire d'Astronomie Spatiale, Marseille, France Laboratoire d'Astronomie Spatiale, Marseille, France 965 NASA, Fermilab Astrophysics Center, Batavia, IL NASA, Fermilab Astrophysics Center, Batavia, IL 966 CEA, Service d'Astrophysique, Gif-sur-Yvette, France CEA, Service d'Astrophysique, Gif-sur-Yvette, France CEN, Service d'Astrophysique, Gif-sur-Yvette, France CEA, Service d'Astrophysique, Guf-sur-Yvette, France CEA, Service d' Astrophysique, Gif-sur-Yvette, France 967 Observatorio Astronomico di Trieste, Trieste, Italy Observatorio Astronomico di Trieste, Trieste, Italy Obsservatorio Astronomico di Trieste, Trieste, Italy 968 Observatoire du Mont Megantique, Montreal, Canada Observatoire du Mont Megantique, Montreal, Canada 969 Institute for Advanced Studies, Princeton, NJ, US Institute for Advanced Studies, Princeton, NJ, US 970 Harvard College Observatory, Fort Davis, Tex. Harvard College Observatory, Fort Davis, Tex. 971 Astronomical Observatory, Wroclaw, Poland Astronomical Observatory, Wroclaw, Poland 972 European Southern Observatory, Germany European Southern Observatory, Germany 973 European Southern Observatory, Gar European Southern Observatory, Gar 974 Wesleyan Observatory, Middletown, CT Wesleyan Observatory, Middletown, CT 975 Astronomical Observatory, Lake Tekapo Astronomical Observatory, Lake Tekapo 976 NOAA, Aeronomy Laboratory, Boulder, Colo. NOAA, Aeronomy Laboratory, Boulder, Colo. 977 Turku Univ. Observatory, Piikkio, Finland Turku Univ. Observatory, Piikkio, Finland 978 Jet Propulsion Laboratory, Pasadena, CA, US Jet Propulsion Laboratory, Pasadena, CA, US 979 Lyon, Observatoire, Saint-Genis-Laval Lyon, Observatoire, Saint-Genis-Laval 980 Univ. of Wyoming, Laramie, WY, US Univ. of Wyoming, Laramie, WY, US 981 Meudon, Observatoire, Paris, France Meudon, Observatoire, Paris, France 982 Carnegie Observatories, Pasadena, CA Carnegie Observatories, Pasadena, CA 983 Victoria Univ., Wellington, New Zealand Victoria Univ., Wellington, New Zealand 984 Sheffield, University, England Sheffield, University, England 985 Tennessee, University, Knoxville, TN Tennessee, University, Knoxville, TN 986 USAF, Geophysics Laboratory USAF, Geophysics Laboratory 987 Arizona Univ., Tucson Arizona Univ., Tucson 988 USAF, Geophysics Laboratory, Hanscom AFB, MA USAF, Geophysics Laboratory, Hanscom AFB, MA 989 Ohio State University, Columbus, Ohio, US Ohio State University, Columbus, Ohio, US 990 Stockholm University Observatory, Sweden Stockholm University Observatory, Sweden 991 Canada-France-Hawaii Telescope, Kamuela, HI Canada-France-Hawaii Telescope, Kamuela, HI 992 Canada-France-Hawaii Telescope Corp. Canada-France-Hawaii Telescope Corp. 993 Brussel, Vrije Universitaet, Brussels, Belgium Brussel, Vrije Universitaet, Brussels, Belgium 994 Technion - Israel Institute of Technology, Haifa Technion - Israel Institute of Technology, Haifa Technion Israel Institute of Technology, Haifa 995 Technion - Israel Inst. of Technology, Haifa Technion - Israel Inst. of Technology, Haifa 996 Califonia Inst. of Technology Califonia Inst. of Technology 997 New Jersey Institute of Technology, Newark New Jersey Institute of Technology, Newark 998 California Institute of Technology California Institute of Technology 999 California Institute of Technology, CA, US California Institute of Technology, CA, US 1000 Univ. of Delaware, Newark, DE, US Univ. of Delaware, Newark, DE, US 1001 Univ. of Torino, Torino, Italy Univ. of Torino, Torino, Italy Univ. di Torino, Torino, Italy 1002 Massachusetts, University Amherst, Mass. Massachusetts, University Amherst, Mass. 1003 Univ. of Oregon, Eugene, OR, US Univ. of Oregon, Eugene, OR, US 1004 Univ. Paris, Paris, France Univ. Paris, Paris, France 1005 Aerospace Corp., Los Angeles, Calif. Aerospace Corp., Los Angeles, Calif. 1006 College de France, Paris, France College de France, Paris, France 1007 Observatorie de Meudon, Meudon, France Observatorie de Meudon, Meudon, France Observatoire de Meudon, Meudon, France 1008 The Aerospace Corp., Los Angeles, CA, US The Aerospace Corp., Los Angeles, CA, US 1009 University of Arizona, Tuscon, Arizona, US University of Arizona, Tuscon, Arizona, US Unviersity of Arizona, Tucson, Arizona, US University of Arizona, Tucson, Arizona, US 1010 Univ. of California, La Jolla, CA, US Univ. of California, La Jolla, CA, US 1011 Univ. of California, Los Angeles, CA, US Univ. of California, Los Angeles, CA, US 1012 Univ. of Georgia, Athens, GA, US Univ. of Georgia, Athens, GA, US 1013 Osservatorio Astronomico, Padua Osservatorio Astronomico, Padua 1014 Univ. of San Diego, La Jolla, CA, US Univ. of San Diego, La Jolla, CA, US 1015 Univ. of Hawaii at Manoa, Honolulu, HI, US Univ. of Hawaii at Manoa, Honolulu, HI, US 1016 Kapteyn Observatory, Netherlands Kapteyn Observatory, Netherlands 1017 Vatican Observatory, Vatican City Vatican Observatory, Vatican City 1018 Aerospace Corp., El Segundo, Calif. Aerospace Corp., El Segundo, Calif. 1019 DEMIRM, Observatoire de Paris, Paris, France DEMIRM, Observatoire de Paris, Paris, France 1020 Lyon, Observatoire, Lyons, France Lyon, Observatoire, Lyons, France 1021 Nuclear Physics Laboratory, Oxford, UK Nuclear Physics Laboratory, Oxford, UK 1022 NOAA, Space Environment Laboratory, Boulder, Colo. NOAA, Space Environment Laboratory, Boulder, Colo. 1023 Lund Institute of Technology, Sweden Lund Institute of Technology, Sweden 1024 Osservatorio Astronomico Osservatorio Astronomico 1025 Univ.of London, London, UK Univ.of London, London, UK Univ. of London, London, UK 1026 High Altitude Observatory High Altitude Observatory 1027 Tuorla Observaoty, Piikkio, Finland Tuorla Observaoty, Piikkio, Finland 1028 Parkes Observatory, Australia Parkes Observatory, Australia 1029 McDonald Observatory, Fort Davis, Tex. McDonald Observatory, Fort Davis, Tex. 1030 Van Vleck Observatory, Middletown, Conn. Van Vleck Observatory, Middletown, Conn. 1031 Big Bear Observatory, Pasadena, CA Big Bear Observatory, Pasadena, CA 1032 Steward Observatory, Tempe, AZ Steward Observatory, Tempe, AZ 1033 Lick Observatory, Santa Cruz, CA Lick Observatory, Santa Cruz, CA Lick Observatory Santa Cruz, CA 1034 Buruni Observatory, Shiraz, Iran Buruni Observatory, Shiraz, Iran 1035 Dunsink Observatory, Dublin, Ireland Dunsink Observatory, Dublin, Ireland 1036 Fairborn Observatory, Phoenix, AZ Fairborn Observatory, Phoenix, AZ 1037 Astronomical Observatory, Italy Astronomical Observatory, Italy 1038 Max-Planck-Inst. fuer Astronomie, Heidelberg, Germany Max-Planck-Inst. fuer Astronomie, Heidelberg, Germany 1039 Osservatorio Astronomico Collurania, Teramo, Italy Osservatorio Astronomico Collurania, Teramo, Italy 1040 Osservatorio Astronomico di Brera, Merate Osservatorio Astronomico di Brera, Merate 1041 Observatorio Astronomico, Cordoba Observatorio Astronomico, Cordoba 1042 Osservatorio Astrofisico, Catania Osservatorio Astrofisico, Catania 1043 Osservatorio Astronomico, Turin, Italy Osservatorio Astronomico, Turin, Italy 1044 NASA. Jet Propulsion Lab., Pasadena, CA, US NASA. Jet Propulsion Lab., Pasadena, CA, US NASA. Jet Propulsion Lab, Pasadena, CA, US 1045 MPI fuer Radioastronomie, Bonn, Germany MPI fuer Radioastronomie, Bonn, Germany 1046 Massachussetts, University, Amherst Massachussetts, University, Amherst 1047 Instituto de Radioastromia Instituto de Radioastromia 1048 Keble College, Oxford, England Keble College, Oxford, England 1049 London Polytechnic, London, England London Polytechnic, London, England 1050 New York State Univ., Cortland New York State Univ., Cortland 1051 Observatoire de Haute-Provence, France Observatoire de Haute-Provence, France 1052 Paris, Observatoire, Meudon, France Paris, Observatoire, Meudon, France 1053 Hawaii Univ., Honolulu Hawaii Univ., Honolulu 1054 Univ. Park, Hilo, HI, US Univ. Park, Hilo, HI, US 1055 California Univ., Los Angeles California Univ., Los Angeles 1056 Warsaw Univesity, Warsaw, Poland Warsaw Univesity, Warsaw, Poland 1057 Berlin, Technische Univ. Berlin, Technische Univ. 1058 Tennessee State Univ., Nashville Tennessee State Univ., Nashville 1059 Connecticut, University, Storrs Connecticut, University, Storrs 1060 Instituto de Radioastronom Instituto de Radioastronom 1061 Universidad de Puer Universidad de Puer 1062 Univ. Laval, Quebec, Canada Univ. Laval, Quebec, Canada 1063 Lab. for Space Research, Netherlands Lab. for Space Research, Netherlands Lab. for Sapce Research, Netherlands 1064 Massachusetts, University, Amherst Massachusetts, University, Amherst 1065 Lancashire Polytechnic, Preston, United Kingdom Lancashire Polytechnic, Preston, United Kingdom 1066 Royal Observatory, Blackford Hill, Edinburgh, Scotland Royal Observatory, Blackford Hill, Edinburgh, Scotland 1067 University of Cambridge, Cambridge, England University of Cambridge, Cambridge, England 1068 Southern California, Los Angeles, Calif. Southern California, Los Angeles, Calif. 1069 Leiden, Sterrewacht, Leiden, Netherlands Leiden, Sterrewacht, Leiden, Netherlands 1070 Goldsmiths' College, London, England Goldsmiths' College, London, England 1071 London College, London, England London College, London, England 1072 Centro Astronomico de Yebes, Guadalajara Centro Astronomico de Yebes, Guadalajara 1073 Case Western Reserve Univ., Cleveland, OH Case Western Reserve Univ., Cleveland, OH 1074 Dunsink Observatory, Castleknock, Ireland Dunsink Observatory, Castleknock, Ireland Dunsink Observatory, Castlenock, Ireland 1075 London, University College, Dorking, Surrey London, University College, Dorking, Surrey 1076 Carnegie Inst. of Washington, Washington, DC, US Carnegie Inst. of Washington, Washington, DC, US 1077 Liverpool, University, Liverpool, England Liverpool, University, Liverpool, England 1078 Anglo-Australian Observatory, Coonabarabran, Australia Anglo-Australian Observatory, Coonabarabran, Australia 1079 London, University, College, Dorking, England London, University, College, Dorking, England 1080 Carnegie Institution of Washington, Washington, DC, US Carnegie Institution of Washington, Washington, DC, US 1081 Univ. of Gdansk, Gdansk, Poland Univ. of Gdansk, Gdansk, Poland 1082 Univ. of Peking, Beijing, China Univ. of Peking, Beijing, China 1083 Univ. of Florence, Firenze, Italy Univ. of Florence, Firenze, Italy 1084 Universite Laval, Sainte-Foy, Canada Universite Laval, Sainte-Foy, Canada Universite Laval, Sainte Foy, Canada 1085 Univ. Paris, Meudon, France Univ. Paris, Meudon, France Univ. Paris 7, Meudon, France 1086 The University, St. Andrews, Scotland The University, St. Andrews, Scotland 1087 Univ. of Toronto, Toronto, Canada Univ. of Toronto, Toronto, Canada 1088 Univ. of Puerto Rico, Humacao Univ. of Puerto Rico, Humacao 1089 Univ. of Aarhus, Aarhus, Denmark Univ. of Aarhus, Aarhus, Denmark 1090 Universite Laval, Quebec, Canada Universite Laval, Quebec, Canada UniversiteLaval, Quebec, Canada Universite Laval, Quebec,Canada 1091 Berlin, Technische Univ., Germany Berlin, Technische Univ., Germany 1092 Univ. of Cambridge, Cambridge, UK Univ. of Cambridge, Cambridge, UK 1093 Univ. of British Columbia, BC, Canada Univ. of British Columbia, BC, Canada 1094 University College, London University College, London 1095 King's College, Cambridge, England King's College, Cambridge, England 1096 Westfield College, London, England Westfield College, London, England 1097 King's College, London, England King's College, London, England 1098 Magdalen College, Oxford, England Magdalen College, Oxford, England 1099 Univ. of Lodz, Lodz, Poland Univ. of Lodz, Lodz, Poland 1100 USAF, Space Div., Los Angeles, CA USAF, Space Div., Los Angeles, CA 1101 University College, Cork, Ireland University College, Cork, Ireland 1102 Univ. College, Dublin, Ireland Univ. College, Dublin, Ireland 1103 Paris VII, Univ., Meudon Paris VII, Univ., Meudon 1104 Univ. of Moscow, Moscow, Russia Univ. of Moscow, Moscow, Russia 1105 University College, Dublin University College, Dublin 1106 Bruxelles, Universite Libre, Brussels, Belgium Bruxelles, Universite Libre, Brussels, Belgium Bruxelles, UniversiteLibre, Brussels, Belgium 1107 Lockheed Research Labs., Palo Alto, CA Lockheed Research Labs., Palo Alto, CA 1108 Vrije Universiteit, Brussels, Belgium Vrije Universiteit, Brussels, Belgium 1109 University of Alabama, Huntsville, AL, US University of Alabama, Huntsville, AL, US 1110 University of Toronto, Ontario, Canada University of Toronto, Ontario, Canada 1111 University of Alberta, Edmonton, Alberta, Canada University of Alberta, Edmonton, Alberta, Canada 1112 University of St. Andrews, St. Andrews, Scotland University of St. Andrews, St. Andrews, Scotland 1113 Technion - Israel Institute of Technology Technion - Israel Institute of Technology 1114 Leiden Univ., Leiden, Netherlands Leiden Univ., Leiden, Netherlands 1115 Paris Observatoire, Paris, France Paris Observatoire, Paris, France 1116 Warner and Swasey Observatory Warner and Swasey Observatory 1117 Kanazawa Institute of Technology, Japan Kanazawa Institute of Technology, Japan 1118 Gemini Project, Tucson, AZ, US Gemini Project, Tucson, AZ, US 1119 Florida Institute of Technology, Melbourne Florida Institute of Technology, Melbourne 1120 Imperial College, London, England, UK Imperial College, London, England, UK 1121 Institute for Advanced Study, NJ Institute for Advanced Study, NJ 1122 CNR, Istituto di Radioastronomia, Noto CNR, Istituto di Radioastronomia, Noto 1123 Georgia Institute of Technology, Atlanta Georgia Institute of Technology, Atlanta 1124 Tokyo Institute of Techonology, Japan Tokyo Institute of Techonology, Japan Tokyo Institute of Technology, Japan 1125 Arecibo Observatory, Arecibo, P.R. Arecibo Observatory, Arecibo, P.R. 1126 Chiba Institute of Technology, Japan Chiba Institute of Technology, Japan 1127 Observatorio Astronomico, La Plata Observatorio Astronomico, La Plata 1128 U.S. Navy, Center for Advanced Space Sensing, Washington U.S. Navy, Center for Advanced Space Sensing, Washington 1129 International School for Advanced Studies, Trieste, Italy International School for Advanced Studies, Trieste, Italy 1130 Tartuskaia Astrofizicheskaia Observatoriia, Tartu, Estonian SSR Tartuskaia Astrofizicheskaia Observatoriia, Tartu, Estonian SSR 1131 Astrofizicheskaia Observatoriia Nizhni Arkhyz, USSR Astrofizicheskaia Observatoriia Nizhni Arkhyz, USSR 1132 Dominion Astrophysical Observatory, Victoria, British Columbia Dominion Astrophysical Observatory, Victoria, British Columbia 1133 Royal Greenwich Observatory, Madingley Rd, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Rd, Cambridge CB3 0EZ 1134 European Southern Observatory, Garching, Muenchen, Germany European Southern Observatory, Garching, Muenchen, Germany 1135 California Insitute of Technology, Pasadena, CA, US California Insitute of Technology, Pasadena, CA, US 1136 Wisconsin, University, Madison, Wis. Wisconsin, University, Madison, Wis. 1137 Calif. Inst. of Technology, Pasadena, CA, US Calif. Inst. of Technology, Pasadena, CA, US 1138 Palermo, Osservatorio Astronomico, Palermo, Italy Palermo, Osservatorio Astronomico, Palermo, Italy 1139 CEA, Service d'Astrophysique, Gif-sur-Yvette CEA, Service d'Astrophysique, Gif-sur-Yvette 1140 California Inst.of Technology, Pasadena, CA, US California Inst.of Technology, Pasadena, CA, US 1141 Five College Radio Astronomy Observatory, Pasadena, CA Five College Radio Astronomy Observatory, Pasadena, CA 1142 Universitats-Sternwarte, Muenchen, Germany Universitats-Sternwarte, Muenchen, Germany 1143 NOAA Space Environment Laboratory, Boulder, CO, US NOAA Space Environment Laboratory, Boulder, CO, US 1144 British Columbia, University, Vancouver, Canada British Columbia, University, Vancouver, Canada British Columbia University, Vancouver, Canada 1145 Space Environment Laboratory, Boulder, Colorado, US Space Environment Laboratory, Boulder, Colorado, US 1146 Massachusetts, University, Amherst, Mass. Massachusetts, University, Amherst, Mass. Massachusetts University, Amherst, Mass. 1147 Los Alamos Scientific Laboratory, Los Alamos, NM Los Alamos Scientific Laboratory, Los Alamos, NM 1148 Innsbruck, Universitaet, Austria Innsbruck, Universitaet, Austria 1149 C. E. Kenneth Mees Observatory, Bristol Springs, N.Y. C. E. Kenneth Mees Observatory, Bristol Springs, N.Y. 1150 European Southern Observatory, Munich, West Germany European Southern Observatory, Munich, West Germany 1151 Multiple Mirror Telescope Observatory, Tucson, AZ, US Multiple Mirror Telescope Observatory, Tucson, AZ, US 1152 Multiple Mirror Telescope Observatory, Tucson, AZ Multiple Mirror Telescope Observatory, Tucson, AZ 1153 Carnegie Institution of Washington, Washington, DC Carnegie Institution of Washington, Washington, DC Carnegie Institution of Washington, Washington, D.C. Carnegie, Institution of Washington, Washington, DC 1154 Bordeaux I, Univ., Observatoire, Floirac, France Bordeaux I, Univ., Observatoire, Floirac, France 1155 European Southern Observatory, Munchen, Germany European Southern Observatory, Munchen, Germany European Southern Observatory, Muenchen, Germany 1156 Nat. Optical Astronomical Observatories, La Serena, Chile Nat. Optical Astronomical Observatories, La Serena, Chile 1157 Cerro Tololo Inter-American Observatory, Tucson, AZ Cerro Tololo Inter-American Observatory, Tucson, AZ 1158 Millimeter Wave Observatory, Fort Davis, TX Millimeter Wave Observatory, Fort Davis, TX 1159 Cambridge University, Observatories, Cambridge Cambridge University, Observatories, Cambridge 1160 Canada-France-Hawaii Telescope, Kamuela, HI, US Canada-France-Hawaii Telescope, Kamuela, HI, US 1161 Canada-France-Hawaii Telescope Corp., Kamuela Canada-France-Hawaii Telescope Corp., Kamuela 1162 Observatorie de Paris-Meudon, Meudon, France Observatorie de Paris-Meudon, Meudon, France Observatoire de Paris-Meudon, Meudon, France 1163 Observatorie de Marseille, Marseille, France Observatorie de Marseille, Marseille, France Observatoire de Marseille, Marseille, France 1164 Observatoire de Calern/OCA, France Observatoire de Calern/OCA, France 1165 Multiple Mirror Telescope Observatory Multiple Mirror Telescope Observatory 1166 Universite Paris, Orsay, France Universite Paris, Orsay, France 1167 Canterbury University, Christchurch, New Zealand Canterbury University, Christchurch, New Zealand 1168 NOAA, Wave Propagation Laboratory, Boulder, Colo. NOAA, Wave Propagation Laboratory, Boulder, Colo. 1169 Millimeter Wave Observatory, Fort Davis, Tex. Millimeter Wave Observatory, Fort Davis, Tex. 1170 Berlin, Technische Universitaet, West Berlin, Technische Universitaet, West 1171 Observatorio Astronomico Nacional, Ensenada Observatorio Astronomico Nacional, Ensenada 1172 Space Telescope Institute, Baltimore, MD, US Space Telescope Institute, Baltimore, MD, US 1173 Georgia Institute of Technology, Atlanta, Ga. Georgia Institute of Technology, Atlanta, Ga. 1174 Osservatorio Astron. di Brera, Milano, Italy Osservatorio Astron. di Brera, Milano, Italy 1175 Osservatorio Astron. di Brera, Milano, US Osservatorio Astron. di Brera, Milano, US 1176 Hewlett-Packard Laboratories, Palo Alto, CA Hewlett-Packard Laboratories, Palo Alto, CA 1177 Osservatorio Astronomico di Bologna, Italy Osservatorio Astronomico di Bologna, Italy 1178 Wroclaw University Observatory, Wroclaw, Poland Wroclaw University Observatory, Wroclaw, Poland 1179 Ball State University, Munice, IN, US Ball State University, Munice, IN, US 1180 Brussels, Free University, Brussels, Belgium Brussels, Free University, Brussels, Belgium 1181 IBM Research Laboratories, San Jose, Calif. IBM Research Laboratories, San Jose, Calif. 1182 California State University, Northridge California State University, Northridge 1183 Brussel Vrije Universiteit, Brussels, Belgium Brussel Vrije Universiteit, Brussels, Belgium Brussel, Vrije Universiteit, Brussels, Belgium Brussel Vrije Universiteit, Brussels, Belgium Brussel, Vrije Universiteit, Brussels, Belgium 1184 Pennsylvania State University, University Park Pennsylvania State University, University Park 1185 Canterbury, University, Christchurch, New Zealand Canterbury, University, Christchurch, New Zealand Canterbury, University, Christchuch, New Zealand 1186 St. Mary's University, Halifax, Nova Scotia, Canada St. Mary's University, Halifax, Nova Scotia, Canada St Mary's University, Halifax, Nova Scotia, Canada 1187 Sheffield, University, Sheffield, England Sheffield, University, Sheffield, England 1188 The Hebrew University, Jerusalem, Israel The Hebrew University, Jerusalem, Israel 1189 Calgary, University, Calgary, Alberta, Canada Calgary, University, Calgary, Alberta, Canada 1190 Univ. of British Columbia, Vancouver, Canada Univ. of British Columbia, Vancouver, Canada 1191 Space Telescope Science Inst., Baltimore, MD Space Telescope Science Inst., Baltimore, MD 1192 Univ. of Alabama, Tuscaloosa, AL, US Univ. of Alabama, Tuscaloosa, AL, US 1193 CNRS, Laboratoire d'Astronomie Spatiale, France CNRS, Laboratoire d'Astronomie Spatiale, France 1194 CNR, Laboratorio di Radioastronomia, Bologna CNR, Laboratorio di Radioastronomia, Bologna 1195 CNR, Istituto di Cosmogeofisica CNR, Istituto di Cosmogeofisica CNR, Istituto di Cosmo-geofisica 1196 Lyon, Observatoire, Sain-Genis-Laval, Rhone, France Lyon, Observatoire, Sain-Genis-Laval, Rhone, France Lyon Observatoire, Saint-Genis-Laval, Rhone, France Lyon, Observatoire, Sain-Genis-Laval, Rhone, France Lyon Observatoire, Saint-Genis-Laval, Rhone, France 1197 Observatoire de Bordeaux, Floirac, France Observatoire de Bordeaux, Floirac, France 1198 National Bureau of Standards, Washington, DC National Bureau of Standards, Washington, DC National Bureau of Standards, Washington, D.C. 1199 London, University, Observatory, London, England London, University, Observatory, London, England 1200 Wichita State University, Wichita, KS Wichita State University, Wichita, KS 1201 Armagh Observatory, Armagh, Northern Ireland, UK Armagh Observatory, Armagh, Northern Ireland, UK 1202 NASA/Fermilab Astrophysics Group, Batavia, IL NASA/Fermilab Astrophysics Group, Batavia, IL 1203 NASA/Fermilab Astrophysics Center, Batavia, IL NASA/Fermilab Astrophysics Center, Batavia, IL NASA/Fermilab. Astrophysics Center, Batavia, IL 1204 Pennsylvania State University, Fogelsville Pennsylvania State University, Fogelsville 1205 Florida State University, Tallahassee Florida State University, Tallahassee 1206 Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Royal Observatory, Blackford Hill, Edinburgh EH93HJ 1207 Athabasca University, Edmonton, Alberta, Canada Athabasca University, Edmonton, Alberta, Canada 1208 Louisiana State University, Baton Rouge, LA Louisiana State University, Baton Rouge, LA 1209 NASA/Ames Research Center, Moffet Field, CA, US NASA/Ames Research Center, Moffet Field, CA, US 1210 Los Alamos National Laboratory, Los Alamos, NM Los Alamos National Laboratory, Los Alamos, NM 1211 The Ohio State University, OH, US The Ohio State University, OH, US 1212 Roma, Osservatorio Astronomico, Monte Porzio Roma, Osservatorio Astronomico, Monte Porzio Roma, Osservatorio Astronomico, Monteporzio 1213 Case Western University, Cleveland, OH Case Western University, Cleveland, OH 1214 Perth Observatory, Perth, Australia Perth Observatory, Perth, Australia 1215 High Altitude Observatory, Pasadena, Calif. High Altitude Observatory, Pasadena, Calif. 1216 Royal Greenwich Observatory, Cambridge, England Royal Greenwich Observatory, Cambridge, England 1217 Cambridge Univ. Inst. of Astronomy, United Kingdom Cambridge Univ. Inst. of Astronomy, United Kingdom 1218 C. E. Kenneth Mees Observatory, Rochester, NY C. E. Kenneth Mees Observatory, Rochester, NY C.E. Kenneth Mees Observatory, Rochester, NY 1219 IBM Watson Research Center, Yorktown Heights IBM Watson Research Center, Yorktown Heights 1220 NASA, Ames Research Center, Mountain View, CA NASA, Ames Research Center, Mountain View, CA 1221 University of Virginia, Charlottesville, VA, US University of Virginia, Charlottesville, VA, US 1222 University College of London, Holmbury, UK University College of London, Holmbury, UK 1223 Universidad de los Andes, Bogota, Colombia Universidad de los Andes, Bogota, Colombia 1224 Bordeaux, Observatoire, Floirac, Gironde, France Bordeaux, Observatoire, Floirac, Gironde, France 1225 Armagh Observatory, Armagh, Northern Ireland Armagh Observatory, Armagh, Northern Ireland 1226 Univ. of Ferrara, Ferrara, Italy Univ. of Ferrara, Ferrara, Italy Univ. di Ferrara, Ferrara, Italy 1227 Michigan State Univ., East Lansing Michigan State Univ., East Lansing 1228 Moscow State Univ., Moscow, Russia Moscow State Univ., Moscow, Russia 1229 Fermi National Accelerator Lab., Batavia, IL, US Fermi National Accelerator Lab., Batavia, IL, US Fermi National Accelerator lab., Batavia, IL, US 1230 Brookhaven National Laboratory, Upton, New York, US Brookhaven National Laboratory, Upton, New York, US 1231 Joint Astronomy Centre, Joint Astronomy Centre, 1232 California Univ. San Diego, La Jolla, CA, US California Univ. San Diego, La Jolla, CA, US 1233 Univ. degli Studi, Milano, Italy Univ. degli Studi, Milano, Italy 1234 Louisiana State Univ., Baton Rouge Louisiana State Univ., Baton Rouge 1235 Instituto de Astrofiscia de Canarias, Tenerife, Spain Instituto de Astrofiscia de Canarias, Tenerife, Spain 1236 Inst. de Astrofisica de Andalucia, Granada, Spain Inst. de Astrofisica de Andalucia, Granada, Spain 1237 Univ. of British Columbia, Vancover, BC, Canada Univ. of British Columbia, Vancover, BC, Canada 1238 C.N.R., Gruppo Nazional Astronomia, Firenze, Italy C.N.R., Gruppo Nazional Astronomia, Firenze, Italy 1239 CNR, Gruppo Nazionale di Astronomia, Italy CNR, Gruppo Nazionale di Astronomia, Italy 1240 CNR, Gruppo Nazionale per l'Astronomia, Italy CNR, Gruppo Nazionale per l'Astronomia, Italy 1241 CNR, Istituto di Radioastronomia, Italy CNR, Istituto di Radioastronomia, Italy 1242 Roma, Osservatorio Astronomico, Rome, Italy Roma, Osservatorio Astronomico, Rome, Italy 1243 Universitats-Sternwarte Bonn, Daun, Germany Universitats-Sternwarte Bonn, Daun, Germany 1244 Universidad de Puerto Rico, San Juan Universidad de Puerto Rico, San Juan 1245 Universitaets-Sternwarte, Bonn, West Germany Universitaets-Sternwarte, Bonn, West Germany 1246 Universitaets-Sternwarte, Bonn, Germany Universitaets-Sternwarte, Bonn, Germany 1247 Universitats-Sternwarte, Goettingen, Germany Universitats-Sternwarte, Goettingen, Germany Universitaets-Sternwarte, Gottingen, Germany 1248 Queen Mary and Westfield College, London, England, UK Queen Mary and Westfield College, London, England, UK 1249 Louisiana State University, Baton Rouge Louisiana State University, Baton Rouge 1250 Toulouse, Observatoire, Toulouse, France Toulouse, Observatoire, Toulouse, France 1251 Canada-France-Hawaii Telescope Corp., Hilo, HI Canada-France-Hawaii Telescope Corp., Hilo, HI 1252 British Columbia, University, Vancouver British Columbia, University, Vancouver 1253 Space Telescope Science Inst., MD, US Space Telescope Science Inst., MD, US 1254 Univ. of Florida, Gainesville, FL, US Univ. of Florida, Gainesville, FL, US Univ. of Florida, Gainsville, FL, US 1255 Univ. of of Hawaii, Honolulu, Hawaii, US Univ. of of Hawaii, Honolulu, Hawaii, US 1256 Pennsylvania State Univ., University Park Pennsylvania State Univ., University Park 1257 National Research Council, Washington, D.C. National Research Council, Washington, D.C. 1258 Universidad Catolica de Chile, Santiago Universidad Catolica de Chile, Santiago 1259 Osservatorio di Brera, Milan, Italy Osservatorio di Brera, Milan, Italy 1260 Michigan State University, East Lansing Michigan State University, East Lansing 1261 Univ. of Padova, Asiago, Italy Univ. of Padova, Asiago, Italy 1262 Perth Observatory, Australia Perth Observatory, Australia 1263 Astronomical Observatory, Padua, Italy Astronomical Observatory, Padua, Italy 1264 Universita di Roma, Roma, Italy Universita di Roma, Roma, Italy 1265 Univ. of Toronto, Toronto, Ontario, Canada Univ. of Toronto, Toronto, Ontario, Canada 1266 Ist. di Astronomia Ist. di Astronomia 1267 Univ. of Genova, Genova, Italy Univ. of Genova, Genova, Italy 1268 Univ. La Sapienza, Roma, Italy Univ. La Sapienza, Roma, Italy Univ. 'La Sapienza', Roma, Italy Univ. La Sapienza, Rome, Italy 1269 University of Pisa, Pisa, Italy University of Pisa, Pisa, Italy 1270 Univ. di Pisa, Pisa, Italy Univ. di Pisa, Pisa, Italy Univ. of Pisa, Pisa, Italy 1271 Centro Astronomico de Yebes, Guadalajara, Spain Centro Astronomico de Yebes, Guadalajara, Spain Centro Astronomico de Yebes, Guadalahara, Spain 1272 Univ. of British Columbia, Vancouver, British Colum., Canada Univ. of British Columbia, Vancouver, British Colum., Canada 1273 Universitaetssternwarte, Goettingen, West Germany Universitaetssternwarte, Goettingen, West Germany Universitaets-Sternwarte, Goettingen, West Germany Universitaet-Sternwarte, Goettingen, West Germany Universitaets Sternwarte, Goettingen, West Germany 1274 Queen Mary and Westfield College, London, England Queen Mary and Westfield College, London, England 1275 Universitats-Sternwarte, Bonn, West Germany Universitats-Sternwarte, Bonn, West Germany 1276 University of Toronto, Toronto, Ontario, Canada University of Toronto, Toronto, Ontario, Canada 1277 Universitaets-Sternwarte, Muenich, West Germany Universitaets Sternwarte, Munich, West Germany Universitaets-Sternwarte, Muenich, West Germany Universitaets Sternwarte, Munich, West Germany Universitaets-Sternwarte, Muenich, West Germany Universitaet-Sternwarte, Munich, West Germany 1278 Universite Laval, Sainte-Foy, Quebec, Canada Universite Laval, Sainte-Foy, Quebec, Canada 1279 Queen Mary & Westfield College, London, England, UK Queen Mary & Westfield College, London, England, UK 1280 Univ. of British Columbia, Vancouver, BC, US Univ. of British Columbia, Vancouver, BC, US 1281 California Institute of Technology, Pasadena California Institute of Technology, Pasadena California Institute for Technology, Pasadena 1282 Indian Institute of Science, Bangalore, India Indian Institute of Science, Bangalore, India 1283 University of British Columbia, Vancouver, BC, Canada University of British Columbia, Vancouver, BC, Canada Unviersity of British Columbia, Vancouver, BC, Canada 1284 Indian Institute of Technology, Bangalore, India Indian Institute of Technology, Bangalore, India 1285 Univ. de Lausanne, Chavannes-des-Bois, Switzerland Univ. de Lausanne, Chavannes-des-Bois, Switzerland 1286 Universitaets-Sternwarte Muenchen, Munich, Germany Universitaets-Sternwarte Muenchen, Munich, Germany 1287 CNR, Gruppo Nazionale di Astronomia, Naples, Italy CNR, Gruppo Nazionale di Astronomia, Naples, Italy 1288 CNR, Gruppo Nazionale di Astronomia CNR, Gruppo Nazionale di Astronomia 1289 CNRS, Istituto di Radioastronomia CNRS, Istituto di Radioastronomia CNR, Istituto di Radioastronomia 1290 Osservatorio Astrofisico Osservatorio Astrofisico 1291 CNR, Istituto Plasma Spazio CNR, Istituto Plasma Spazio 1292 CNR, Istituto di Cosmo-Geofisica CNR, Istituto di Cosmo-Geofisica 1293 Observatoire de Paris, France Observatoire de Paris, France 1294 CNR, Istituto di Fisica Cosmica CNR, Istituto di Fisica Cosmica 1295 Lancashire Polytechnic, Preston Lancashire Polytechnic, Preston 1296 Univ. of Toronto, Toronto, ON, Canada Univ. of Toronto, Toronto, ON, Canada 1297 Univ. College, London, England Univ. College, London, England 1298 Univ. of Haifa, Haifa, Israel Univ. of Haifa, Haifa, Israel 1299 British Columbia Univ., Vancouver British Columbia Univ., Vancouver 1300 Osservatorio Astronomico, Trieste Osservatorio Astronomico, Trieste 1301 Univ. di Bologna, Bologna, Italy Univ. di Bologna, Bologna, Italy Univ. of Bologna, Bologna, Italy 1302 Univ. of Virginia, VA, US Univ. of Virginia, VA, US 1303 Univ di Milano, Milano, Italy Univ di Milano, Milano, Italy Univ. di Milano, Milano, Italy 1304 Univ. of Oklahoma, Norman, OK, US Univ. of Oklahoma, Norman, OK, US 1305 Univ. of Milano, Milano, Italy Univ. of Milano, Milano, Italy 1306 Univ. di Padova, Padova, Italy Univ. di Padova, Padova, Italy Univ. of Padova, Padova, Italy 1307 Berlin, Technische Universitaet Berlin, Technische Universitaet Berlin, Technische Unversitaet 1308 Universite Paris 7, Paris, France Universite Paris 7, Paris, France 1309 Univ. of California, Riverside, CA, US Univ. of California, Riverside, CA, US 1310 Univ. of Leece, Leece, Italy Univ. of Leece, Leece, Italy 1311 Univ. of Palermo, Palermo, Italy Univ. of Palermo, Palermo, Italy 1312 New Hampshire Univ., Durham, NH, US New Hampshire Univ., Durham, NH, US 1313 Ohio State Univ., Columbus, OH, US Ohio State Univ., Columbus, OH, US 1314 Cavendish Lab., Cambridge, UK Cavendish Lab., Cambridge, UK 1315 University of Hawaii, Honolulu, HI, US University of Hawaii, Honolulu, HI, US 1316 Observatoire de Nice, Nice, France Observatoire de Nice, Nice, France 1317 Univ. of Victoria, Victoria, BC, UK Univ. of Victoria, Victoria, BC, UK 1318 Univ. of Iowa, Iowa, IA, US Univ. of Iowa, Iowa, IA, US 1319 Univ. of California, Berkely, CA, US Univ of California, Berkeley, CA, US Univ. of California, Berkely, CA, US Univ. of California, Berkeley, CA, US Univ. of Calilfornia, Berkeley, CA, US 1320 London, University College, Dorking, England London, University College, Dorking, England London University College, Dorking, England 1321 Institute of Physical and Chemical Research, Wako, Japan Institute of Physical and Chemical Research, Wako, Japan 1322 Preston Polytechnic, Preston, England Preston Polytechnic, Preston, England 1323 CEA, Section d'Astrophysique, Gif-sur-Yvette, France CEA, Section d'Astrophysique, Gif-sur-Yvette, France 1324 San Diego State University, San Diego, CA San Diego State University, San Diego, CA 1325 Washington State Univ., Pullman Washington State Univ., Pullman 1326 Londrina State Univ., Brazil Londrina State Univ., Brazil 1327 Wichita State Univ., KS Wichita State Univ., KS 1328 Calgary Univ., Calgary, Alberta, Canada Calgary Univ., Calgary, Alberta, Canada 1329 Calgary, University, Alberta, Canada Calgary, University, Alberta, Canada 1330 California Inst. of Technology California Inst. of Technology 1331 Jackson State University, Jackson, MS Jackson State University, Jackson, MS 1332 Georgia State Univ., Atlanta Georgia State Univ., Atlanta 1333 Aerospace Corp., Los Angeles Aerospace Corp., Los Angeles 1334 Fanshawe College, London, Canada Fanshawe College, London, Canada 1335 Warsaw Univ., Warsaw, Poland Warsaw Univ., Warsaw, Poland 1336 Massachusetts Univ., Amherst Massachusetts Univ., Amherst 1337 Cambridge Univ. Inst. of Astronomy Cambridge Univ. Inst. of Astronomy 1338 NASA, Johnson Space Center NASA, Johnson Space Center 1339 Fermi National Accelerator Lab., Batavia, IL Fermi National Accelerator Lab., Batavia, IL 1340 Univ. of Alabama, Huntsville, AL, US Univ. of Alabama, Huntsville, AL, US 1341 Univ. of Washington, WA, US Univ. of Washington, WA, US 1342 Univ. of Kansas, Lawrence, KS, US Univ. of Kansas, Lawrence, KS, US 1343 Univ. of Hawaii, Honolulu, HI, US Univ. of Hawaii, Honolulu, HA, US Univ.of Hawaii, Honolulu, HI, US Univ. of Hawaii, Honolulu, HI, US 1344 Univ. of Glasgow, Glasgow, UK Univ. of Glasgow, Glasgow, UK 1345 Univ. of Arizona, Tucson, Arizona, US Univ. of Arizona, Tucson, Arizona, US 1346 British Columbia, Vancouver, Canada British Columbia, Vancouver, Canada 1347 Univ. of College London, London, UK Univ. of College London, London, UK 1348 Univ. of Nevada, Las Vegas, NV, US Univ. of Nevada, Las Vegas, NV, US 1349 Hawaii Univ. at Manoa, Honolulu, HI, US Hawaii Univ. at Manoa, Honolulu, HI, US 1350 Univ. of Oslo, Oslo, Norway Univ. of Oslo, Oslo, Norway 1351 Univ. of Maine, Orono, ME, US Univ. of Maine, Orono, ME, US 1352 Univ. of Calif., Berkeley, CA, US Univ. of Calif., Berkeley, CA, US 1353 Univ. of California, Irvine, CA, US Univ. of California, Irvine, CA, US 1354 Brussel, Universiteit, Brussels, Belgium Brussel, Universiteit, Brussels, Belgium 1355 Turku University, Observatory, Finland Turku University, Observatory, Finland Turku University Observatory, Finland 1356 Calgary, University, Calgary, Canada Calgary, University, Calgary, Canada 1357 Pennsylvania, University, University Park Pennsylvania, University, University Park 1358 California State University, Los Angeles, CA California State University, Los Angeles, CA 1359 Arecibo Observatory Arecibo Observatory 1360 Washburn Observatory, Madison, WI Washburn Observatory, Madison, WI Washburn Observatory, Madison. WI 1361 Paris, Observatorie, Meudon Paris, Observatorie, Meudon Paris, Observatoire, Meudon 1362 Univ. of Durham, Durham, UK Univ. of Durham, Durham, UK 1363 Univ. of Durham, England, UK Univ. of Durham, England, UK 1364 Univ of Arizona, Tucson, AZ, US Univ of Arizona, Tucson, AZ, US Univ. of Arizon, Tucson, AZ, US Univ. of Arizona, Tucson, AZ, US 1365 Univ. of Toledo, Toledo, OH, US Univ. of Toledo, Toledo, OH, US 1366 Univ. de Zaragoza, Zaragoza, Spain Univ. de Zaragoza, Zaragoza, Spain 1367 Univ. di Roma, Roma, Italy Univ. di Roma, Roma, Italy 1368 Univ. of Hawaii, HI, US Univ. of Hawaii, HI, US 1369 Univ. of Arizona, Tempe, AZ, US Univ. of Arizona, Tempe, AZ, US 1370 Univ. of Haifa, TIVON, Israel Univ. of Haifa, TIVON, Israel 1371 Univ. of Calgary, Alberta, Canada Univ. of Calgary, Alberta, Canada 1372 Lick Obervatory, Santa Cruz, CA Lick Obervatory, Santa Cruz, CA Lick, Observatory, Santa Cruz, CA 1373 Yale Observatory, New Haven, CT Yale Observatory, New Haven, CT 1374 Dikewood Corp., Los Angeles, Calif. Dikewood Corp., Los Angeles, Calif. 1375 Aerospace Corp., Los Angeles, CA Aerospace Corp., Los Angeles, CA 1376 Mauna Kea Observatory, Hilo, HI Mauna Kea Observatory, Hilo, HI 1377 Bradley Observatory, Decatur, GA Bradley Observatory, Decatur, GA 1378 Perkins Observatory, Columbus, OH Perkins Observatory, Columbus, OH 1379 College Observatory, Danbury, CT College Observatory, Danbury, CT 1380 Radio Observatory, Ann Arbor, MI Radio Observatory, Ann Arbor, MI 1381 Behlen Observatory, Lincoln, Neb. Behlen Observatory, Lincoln, Neb. 1382 Lines Observatory, Mayer, AZ Lines Observatory, Mayer, AZ 1383 Lowell Observatory, Flagstaff, AZ Lowell Observatory, Flagstaff, AZ 1384 Dearborn Observatory, Evanston, IL Dearborn Observatory, Evanston, IL 1385 Moore Observatory, Crestwood, KY Moore Observatory, Crestwood, KY 1386 Dyer Observatory, Nashville, TN Dyer Observatory, Nashville, TN 1387 Perkins Observatory, Delaware, OH Perkins Observatory, Delaware, OH 1388 Paris, Observatoire, Paris Paris, Observatoire, Paris 1389 Lines Observatory, Phoenix, AZ Lines Observatory, Phoenix, AZ 1390 Armagh Observatory, Armagh, UK Armagh Observatory, Armagh, UK Armagh Observatory, Armagh, uk 1391 Van Vleck Observatory, Middletown, CT Van Vleck Observatory, Middletown, CT van Vleck Observatory, Middletown, CT 1392 Fritz Peak Observatory, Boulder, Colo. Fritz Peak Observatory, Boulder, Colo. 1393 U.S. Naval Observatory, Washington U.S. Naval Observatory, Washington 1394 Warsaw Univ. Observatory, Poland Warsaw Univ. Observatory, Poland 1395 Steward Observatory, Tucson, Ariz. Steward Observatory, Tucson, Ariz. Steward, Observatory, Tucson, Ariz. 1396 Sacramento Peak Observatory, Sunspot, NM Sacramento Peak Observatory, Sunspot, NM 1397 Battelle Observatory, Richland, Wash. Battelle Observatory, Richland, Wash. 1398 Washburn Observatory, Madison, Wis. Washburn Observatory, Madison, Wis. 1399 Marseille Observatoire, Marseille Marseille Observatoire, Marseille 1400 Mees Observatory, Rochester, N.Y. Mees Observatory, Rochester, N.Y. Mees Observatory, Rochester, NY 1401 Washburn Observatory, Madison Washburn Observatory, Madison 1402 Yerkes Observatory, Chicago, Ill. Yerkes Observatory, Chicago, Ill. 1403 Behlen Observatory, Lincoln, NE Behlen Observatory, Lincoln, NE 1404 Leiden, Observatory, Netherlands Leiden, Observatory, Netherlands Leiden Observatory, Netherlands 1405 Dudley Observatory, Albany, N.Y. Dudley Observatory, Albany, N.Y. 1406 Yerkes Observatory, Chicago, IL Yerkes Observatory, Chicago, IL 1407 Lick Observatory, Santa Cruz, AZ Lick Observatory, Santa Cruz, AZ 1408 Calern, Observatoire, Saint-Vallier Calern, Observatoire, Saint-Vallier 1409 Kapetyn Observatory, Netherlands Kapetyn Observatory, Netherlands 1410 McDonald Observatory, Mount Locke, TX McDonald Observatory, Mount Locke, TX 1411 Tuorla Observatory, Piikkio, Finland Tuorla Observatory, Piikkio, Finland Tuorla Observatory, Piikio, Finland 1412 Yale University Observatory, New Haven, CT, US Yale University Observatory, New Haven, CT, US 1413 Yale University Observatory, New Haven, CT Yale University Observatory, New Haven, CT Yale University, Observatory, New Haven, CT 1414 University Observatory, St. Andrews, England University Observatory, St. Andrews, England 1415 IPAC, California Institute of Techology, CA, US IPAC, California Institute of Techology, CA, US 1416 David Dunlop Observatory, Richmond Hill David Dunlop Observatory, Richmond Hill 1417 Arecibo Observatory, Arecibo PR Arecibo Observatory, Arecibo PR 1418 McDonald Observatory, Mount Locke, Tex. McDonald Observatory, Mount Locke, Tex. 1419 McDonald Observatory, Fort Davis, TX McDonald Observatory, Fort Davis, TX 1420 Allegheny Observatory, Pittsburgh, Pa. Allegheny Observatory, Pittsburgh, Pa. Allegheny Observatory, Pittsburgh, PA 1421 Arecibo Observatory, Arceibo, P.R. Arecibo Observatory, Arceibo, P.R. 1422 Radio Observatory, Columbus, Ohio Radio Observatory, Columbus, Ohio 1423 Fairborn Observatory, Tucson, AZ, US Fairborn Observatory, Tucson, AZ, US 1424 Perkins Observatory, Delaware, Ohio Perkins Observatory, Delaware, Ohio 1425 Perkins Observatory, Columbus, Ohio Perkins Observatory, Columbus, Ohio 1426 Lyon, Observatoire, St.-Genis-Laval, Rhone Lyon, Observatoire, St.-Genis-Laval, Rhone 1427 Uppsala Observatory, Uppsala, Sweden Uppsala Observatory, Uppsala, Sweden 1428 Prairie Observatory, Urbana, Ill. Prairie Observatory, Urbana, Ill. 1429 Fairborn Observatory, Mesa, AZ Fairborn Observatory, Mesa, AZ 1430 High Altitude Observatory, Boulder, Colo. High Altitude Observatory, Boulder, Colo. 1431 Tartu Astrophysical Observatory, Toravere, Estonia Tartu Astrophysical Observatory, Toravere, Estonia 1432 Instituto de Astrofisica de Canarias, La Laguna Instituto de Astrofisica de Canarias, La Laguna 1433 Wright State University, Dayton, OH Wright State University, Dayton, OH 1434 San Diego State Univ., CA San Diego State Univ., CA 1435 Univ. of Iowa, Iowa City, IA, US Univ. of Iowa, Iowa City, IA, US 1436 Imperial College, London, UK Imperial College, London, UK 1437 Univ. of Hawaii, Hilo, HI, US Univ. of Hawaii, Hilo, HI, US 1438 Massachusetts, University Massachusetts, University 1439 Univ. of Leeds, Leeds, UK Univ. of Leeds, Leeds, UK 1440 Univ. Station, Laramie, WY, US Univ. Station, Laramie, WY, US 1441 Mankato State Univ., MN Mankato State Univ., MN 1442 NASA. Headquarters, Washington, DC, US NASA. Headquarters, Washington, DC, US NASA Headquarters, Washington, DC, US 1443 Leuven, Katholieke Universiteit, Louvain Leuven, Katholieke Universiteit, Louvain 1444 NishiHarima Astronomical Observatory, Hyogo, Japan NishiHarima Astronomical Observatory, Hyogo, Japan 1445 Paris, Observatoire, Nancay, Cher, France Paris, Observatoire, Nancay, Cher, France 1446 National Astronomical Observatory, Smoljan, Bulgaria National Astronomical Observatory, Smoljan, Bulgaria 1447 National Astronomical Observatory, Mizusawa, Japan National Astronomical Observatory, Mizusawa, Japan 1448 Volgograd State Univ., Russia Volgograd State Univ., Russia 1449 Van Vleck Observatory Van Vleck Observatory 1450 Univ. Observatory, Munich, Germany Univ. Observatory, Munich, Germany 1451 Massachusetts University Massachusetts University 1452 La Plata Univ., Argentina La Plata Univ., Argentina 1453 Lethbridge Univ., Canada Lethbridge Univ., Canada 1454 Tallinn Observatory, Tallinn, Estonia Tallinn Observatory, Tallinn, Estonia 1455 Steward Observatory, Austin, TX Steward Observatory, Austin, TX 1456 Ford Observatory, Lakewood, CA Ford Observatory, Lakewood, CA 1457 Royal Observatory, Scotland, UK Royal Observatory, Scotland, UK 1458 Radio Observatory, Ann Arbor, Mich. Radio Observatory, Ann Arbor, Mich. 1459 Ritter Observatory, Toledo Ritter Observatory, Toledo 1460 McDonald Observatory, Austin, TX McDonald Observatory, Austin, TX 1461 Casey Observatory, Eau Claire, WI Casey Observatory, Eau Claire, WI 1462 U.S Naval Observatory, Flagstaff, AZ U.S Naval Observatory, Flagstaff, AZ U.S. Naval Observatory, Flagstaff, AZ 1463 Arecibo Observatory, PR Arecibo Observatory, PR Arecibo Observatorio, PR 1464 McDonald Observatory, Austin McDonald Observatory, Austin 1465 Ritter Observatory, Toledo, Ohio Ritter Observatory, Toledo, Ohio 1466 Dyer Observatory, Nashville, Tenn. Dyer Observatory, Nashville, Tenn. 1467 David Dunlap Observatory, Canada David Dunlap Observatory, Canada 1468 Dunsink Observatory, Dunsink, Ireland Dunsink Observatory, Dunsink, Ireland 1469 NOAA, Space Environment Lab., Boulder, CO NOAA, Space Environment Lab., Boulder, CO 1470 Astronomiska Observatoriet, Uppsala Astronomiska Observatoriet, Uppsala Astronomiska Observatorium, Uppsala 1471 Anglo-Australian Observatory, Coonabarabran Anglo-Australian Observatory, Coonabarabran 1472 Padova, Osservatorio Astronomico, Padua, Italy Padova, Osservatorio Astronomico, Padua, Italy 1473 Brera, Osservatorio Astronomico, Milan, Italy Brera, Osservatorio Astronomico, Milan, Italy 1474 Joint Institute for Laboratory Astrophysics Joint Institute for Laboratory Astrophysics 1475 Joint Astronomy Centre, Hilo, Hawaii Joint Astronomy Centre, Hilo, Hawaii 1476 Warner and Swasey Observatory, East Cleveland, OH Warner and Swasey Observatory, East Cleveland, OH 1477 Bensancon, Observatoire, Besancon, France Bensancon, Observatoire, Besancon, France 1478 Case Western Reserve Univ., Cleveland, OH, US Case Western Reserve Univ., Cleveland, OH, US 1479 Centro Astronomico Hispano-Aleman, Almeria, Spain Centro Astronomico Hispano-Aleman, Almeria, Spain Centro Astronomico Hispano Aleman, Almeria, Spain 1480 Institute of Astronomy, Honolulu, HI, US Institute of Astronomy, Honolulu, HI, US 1481 Max-Planck-Inst. fuer Radioastronomie, Bonn Max-Planck-Inst. fuer Radioastronomie, Bonn 1482 Observatorio Astronomico Felix Aguilar Observatorio Astronomico Felix Aguilar 1483 Los Alamos National Laboratory Los Alamos National Laboratory 1484 Inst. of Space and Astronomical Science, Kanagawa, Japan Inst. of Space and Astronomical Science, Kanagawa, Japan 1485 Padova, Osservatorio Astronomico, Asiago, Italy Padova, Osservatorio Astronomico, Asiago, Italy 1486 Univ. of Toronto, Ontario, Canada Univ. of Toronto, Ontario, Canada 1487 Max-Planck-Inst. fuer Radioastronomie Max-Planck-Inst. fuer Radioastronomie 1488 Osservatorio Astrofisico, Italy Osservatorio Astrofisico, Italy 1489 CNR, Ist. di Radioastronomia CNR, Ist. di Radioastronomia 1490 Osservatorio Astrofisico, Asiago Osservatorio Astrofisico, Asiago 1491 U.S. Naval Observatory, Flagstaff Station, AZ, US U.S. Naval Observatory, Flagstaff Station, AZ, US 1492 Pic-du-Midi et Toulouse, Observatoires, Bagn Pic-du-Midi et Toulouse, Observatoires, Bagn 1493 Beijing Observatory, People's Republic of China Beijing Observatory, People's Republic of China 1494 Palomar Observatory, San Diego, CA Palomar Observatory, San Diego, CA 1495 Astronomical Observatory, Helsinki, Finland Astronomical Observatory, Helsinki, Finland 1496 Astrophysical Observatory, Asiago, Italy Astrophysical Observatory, Asiago, Italy 1497 Astronomska Opservatorija, Belgrade, Yugoslavia Astronomska Opservatorija, Belgrade, Yugoslavia Astronomiska Opservatorija, Belgrade, Yugoslavia 1498 Arecibo Observatory, Arecibo, Puerto Rico Arecibo Observatory, Arecibo, Puerto Rico 1499 Meudon, Observatoire, Meudon, Hauts-de-Seine Meudon, Observatoire, Meudon, Hauts-de-Seine 1500 Leiden Observatory, Leiden, The Netherlands Leiden Observatory, Leiden, The Netherlands 1501 US Naval Observatory, Washington, DC, US US Naval Observatory, Washington, DC, US US Naval Observatory, Washignton, DC, US U.S. Naval Observatory, Washington, DC, US 1502 Palomar Observatory, Pasadena, CA, US Palomar Observatory, Pasadena, CA, US 1503 Hvar, Opservatorija, Zagreb, Yugoslavia Hvar, Opservatorija, Zagreb, Yugoslavia Hvar Opservatorija, Zagreb, Yugoslavia 1504 Tartu Astrophysical Observatory, Tartumaa, Estonia Tartu Astrophysical Observatory, Tartumaa, Estonia 1505 National Astronomical Observataory, Mitaka, Japan National Astronomical Observataory, Mitaka, Japan 1506 Astrophysical Observatory, Catania, Italy Astrophysical Observatory, Catania, Italy 1507 Tokyo Astronmical Observatory, Mitaka, Japan Tokyo Astronmical Observatory, Mitaka, Japan 1508 Astronomical Observatory, Krakow, Poland Astronomical Observatory, Krakow, Poland 1509 Astronomical Observatory, Baghdad, Iraq Astronomical Observatory, Baghdad, Iraq 1510 Padua Astronomical Observatory, Padova, Italy Padua Astronomical Observatory, Padova, Italy Padua Astronomical Observatory, Padua, Italy 1511 Uppsala Astronomical Observatory, Uppsala, Sweden Uppsala Astronomical Observatory, Uppsala, Sweden 1512 Main Astronomical Observatory, Kiev, Ukraine Main Astronomical Observatory, Kiev, Ukraine 1513 Laboratory for Space Research, Utrecht, Netherlands Laboratory for Space Research, Utrecht, Netherlands 1514 Univ. of California, Los Angles, CA, US Univ. of California, Los Angles, CA, US 1515 Univ. of CalifornIA, Berkeley, CA, US Univ. of CalifornIA, Berkeley, CA, US 1516 Univ. of California, Livermore, CA, US Univ. of California, Livermore, CA, US 1517 Univ. of Victoria, Victoria, BC, US Univ. of Victoria, Victoria, BC, US 1518 Tokyo Astronomical Observatory, Japan Tokyo Astronomical Observatory, Japan 1519 Astronomiske Observatorium, Tollose, Denmark Astronomiske Observatorium, Tollose, Denmark 1520 Astronomical Observatory, Warsaw, Poland Astronomical Observatory, Warsaw, Poland 1521 Univ. of British Columbia, UK Univ. of British Columbia, UK 1522 Univ. of Missouri, Columbia, MO, US Univ. of Missouri, Columbia, MO, US 1523 Univ. of Padua, Padua, Italy Univ. of Padua, Padua, Italy Univ. of Padua, Padova, Italy 1524 AN SSSR, Fizicheskii Institut, Moscow, USSR AN SSSR, Fizicheskii Institut, Moscow, USSR 1525 Ohio State University Columbus Ohio State University Columbus 1526 C.E. Kenneth Mees Observatory, NY C.E. Kenneth Mees Observatory, NY C. E. Kenneth Mees Observatory, NY 1527 NASA, Johnson Space Center, Houston, TX NASA, Johnson Space Center, Houston, TX 1528 Iowa State University, Ames, IA, US Iowa State University, Ames, IA, US 1529 Jet Propulsion Lab., Pasadena, CA, US Jet Propulsion Lab., Pasadena, CA, US Jet Propulsion Lab, Pasedena, CA, US 1530 Leiden Observatory, Leiden, Netherlands Leiden Observatory, Leiden, Netherlands 1531 Paris-Meudon Observatory, Meudon, France Paris-Meudon Observatory, Meudon, France 1532 Astronomy Observatory, Cambridge, England Astronomy Observatory, Cambridge, England 1533 Armagh Observatory, Northern Ireland Armagh Observatory, Northern Ireland 1534 Meudon Observatoire, Hauts-de-Seine Meudon Observatoire, Hauts-de-Seine 1535 Perkins Observatory, Delaware Perkins Observatory, Delaware 1536 Shanghai Observatory, People's Republic of China Shanghai Observatory, People's Republic of China 1537 Dunsink Observatory, Dublin, Republic of Ireland Dunsink Observatory, Dublin, Republic of Ireland 1538 C. E. Kenneth Mees Observatory, Rochester, N.Y. C. E. Kenneth Mees Observatory, Rochester, N.Y. 1539 Van Vleck Observatory, Middletown, CT, US Van Vleck Observatory, Middletown, CT, US 1540 US Naval Observatory, Flagstaff, AZ, US US Naval Observatory, Flagstaff, AZ, US U.S. Naval Observatory, Flagstaff, AZ, US 1541 Steward Observatory, Tuscon, AZ, US Steward Observatory, Tuscon, AZ, US 1542 Dearborn Observatory, Evanston, Ill. Dearborn Observatory, Evanston, Ill. 1543 Royal Greenwich Observatory, Herstmonceux Royal Greenwich Observatory, Herstmonceux 1544 Astronomiska Observatorium, Uppsala, Sweden Astronomiska Observatorium, Uppsala, Sweden 1545 Anglo-Australian Observatory, Epping Anglo-Australian Observatory, Epping 1546 Washburn Observatory, Madison, WI, US Washburn Observatory, Madison, WI, US 1547 David Dunlap Observatory, Mississauga, Canada David Dunlap Observatory, Mississauga, Canada 1548 Warsaw Univ. Observatory, Poland, UK Warsaw Univ. Observatory, Poland, UK 1549 Stewart Observatory, Tucson, Ariz. Stewart Observatory, Tucson, Ariz. 1550 Scuppernong Observatory, Waukesha, Wis. Scuppernong Observatory, Waukesha, Wis. 1551 Astronomical Observatory, Poznan, Poland Astronomical Observatory, Poznan, Poland 1552 Bordeaux, Observatoire, Floriac, France Bordeaux, Observatoire, Floriac, France Bordeaux, Observatoire, Floirac, France 1553 David Dunlap Observatory, Toronto, Canada David Dunlap Observatory, Toronto, Canada 1554 Royal Greenwhich Observatory, England Royal Greenwhich Observatory, England 1555 Shenandoah Observatory, Southport, CT Shenandoah Observatory, Southport, CT 1556 McDonald Observatory, Austin, Tex. McDonald Observatory, Austin, Tex. McDonald Observatory, Austin, Texas 1557 European Southern Observatory, Santiago European Southern Observatory, Santiago 1558 Astronomical Observatory, Istanbul, Turkey Astronomical Observatory, Istanbul, Turkey 1559 Anglo-Australian Observatory, Australia Anglo-Australian Observatory, Australia 1560 Turku University Observatory, Piikkio Turku University Observatory, Piikkio 1561 Apache Point Observatory, Sunspot Apache Point Observatory, Sunspot 1562 Aegean University Observatory, Bornova, Turkey Aegean University Observatory, Bornova, Turkey 1563 Royal Greenwich Observatory, United Kingdom Royal Greenwich Observatory, United Kingdom 1564 Paris, Observatory, Meudon, France Paris, Observatory, Meudon, France 1565 High Altitude Observatory, Boulder, CO High Altitude Observatory, Boulder, CO 1566 Anglo-Australian Observatory, Epping, Aust Anglo-Australian Observatory, Epping, Aust 1567 Sacramento Peak Observatory, Tucson, AZ Sacramento Peak Observatory, Tucson, AZ 1568 Lund University, Observatory, Sweden Lund University, Observatory, Sweden Lund, University, Observatory, Sweden 1569 Yale University Observatory, New Haven Yale University Observatory, New Haven 1570 European Southern Observatory, La Silla European Southern Observatory, La Silla 1571 Royal Greenwich Observatory, Hailsham, Sussex Royal Greenwich Observatory, Hailsham, Sussex 1572 Royal Greenwich Observatory, England, UK Royal Greenwich Observatory, England, UK 1573 Louisiana State Univ. Observatory, Baton Rouge Louisiana State Univ. Observatory, Baton Rouge 1574 Stockholms Observatorium, Saltsjobaden Stockholms Observatorium, Saltsjobaden Stockholms Observatorium Saltsjobaden 1575 National Bureau of Standards, Boulder, CO National Bureau of Standards, Boulder, CO 1576 Cerro Tololo Inter-American Observatory, Tucson, AZ, US Cerro Tololo Inter-American Observatory, Tucson, AZ, US 1577 CEA, Service d'Aeronomie, Verrieres-le-Buisson, France CEA, Service d'Aeronomie, Verrieres-le-Buisson, France 1578 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ 1579 The Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ The Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ 1580 IBM Thomas J. Watson Research Center, Yorktown Heights IBM Thomas J. Watson Research Center, Yorktown Heights 1581 Max-Planck-Inst. fuer Astronomie, Germany Max-Planck-Inst. fuer Astronomie, Germany 1582 Service d'Astrophysique, Gif/Yvette, France Service d'Astrophysique, Gif/Yvette, France 1583 Universitaets-Sternwart, Munich, West Germany Universitaets-Sternwart, Munich, West Germany 1584 Observatoire de Paris,, Meudon, France Observatoire de Paris,, Meudon, France Observatiore de Paris, Meudon, France Observatoire de Paris,, Meudon, France Observatiore de Paris, Meudon, France 1585 Universitaets-Sternwarte, Jena, Germany Universitaets-Sternwarte, Jena, Germany Universitats-Sternwarte, Jena, Germany 1586 Muenchen, Universitaets- Sternwarte, Munich, West Germany Muenchen, Universitaets- Sternwarte, Munich, West Germany 1587 Universitaets-Sternwarte, Vienna, Austria Universitaets-Sternwarte, Vienna, Austria 1588 Bonn, Universitaet, Sternwarte, Bonn, West Germany Bonn, Universitaet, Sternwarte, Bonn, West Germany 1589 Joint Institute for Laboratory Astrophysics, Boulder Joint Institute for Laboratory Astrophysics, Boulder 1590 Kanasawa Institute of Technology, Japan Kanasawa Institute of Technology, Japan 1591 Carnegie Institution of Washington, Pasadena, CA, US Carnegie Institution of Washington, Pasadena, CA, US 1592 Istituto ed Osservatorio Astronomico, Palermo, Italy Istituto ed Osservatorio Astronomico, Palermo, Italy 1593 Beijing Observatory, Beijing, People's Republic of China Beijing Observatory, Beijing, People's Republic of China 1594 Case Western Reserve University, Cleveland, OH Case Western Reserve University, Cleveland, OH 1595 Institute for Advanced Study, Madison, WI, US Institute for Advanced Study, Madison, WI, US 1596 Observatorio Nacional-CNPq, Rio de Janeiro, Brazil Observatorio Nacional-CNPq, Rio de Janeiro, Brazil Observatorio Nacional CNPq, Rio de Janeiro, Brazil 1597 Rio Grande do Sul, Universidade Federal, Porto Alegre Rio Grande do Sul, Universidade Federal, Porto Alegre 1598 Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA Institute of Astronomy, Madingley Road, Cambridge CB3 0HA 1599 Observatorio Astrofisico Brasileiro, Rio de Janeiro, Brazil Observatorio Astrofisico Brasileiro, Rio de Janeiro, Brazil 1600 South African Astronomical Observatory, Republic of South Africa South African Astronomical Observatory, Republic of South Africa 1601 Pretoria, University, Pretoria, Republic of South Africa Pretoria, University, Pretoria, Republic of South Africa 1602 Osservatorio Astronomico di Brera-Merate, Milano, Italy Osservatorio Astronomico di Brera-Merate, Milano, Italy 1603 International School for Advanced Study, Trieste, Italy International School for Advanced Study, Trieste, Italy 1604 Max-Planck-Inst. fuer Astronomie, Bonn, Germany Max-Planck-Inst. fuer Astronomie, Bonn, Germany 1605 Max-Planck-Institut fur Radioastronomie, Bonn, Germany Max-Planck-Institut fur Radioastronomie, Bonn, Germany Max-Planck-Insitut fuer Radioastronomie, Bonn, Germany Max-Planck-Institut fur Radioastronomie, Bonn, Germany Max-Planck-Insitut fuer Radioastronomie, Bonn, Germany 1606 Univ.-Sternwarte, Munich, Germany Univ.-Sternwarte, Munich, Germany 1607 Observatoire de Paris, Paris, France Observatoire de Paris, Paris, France 1608 Eueopean Southern Observatory, Geneva, Switzerland Eueopean Southern Observatory, Geneva, Switzerland European Southern Observatory, Geneva, Switzerland 1609 National Astronomical Observatory, Mizuswa, Japan National Astronomical Observatory, Mizuswa, Japan 1610 National Astronomical Observatory, Japan National Astronomical Observatory, Japan 1611 National Astronomical Observatory, Mitaka National Astronomical Observatory, Mitaka 1612 Canterbury Univ., Christchurch, New Zealand Canterbury Univ., Christchurch, New Zealand 1613 Uppsala, Astronomiska Observatorium, Uppsala, Sweden Uppsala, Astronomiska Observatorium, Uppsala, Sweden Uppsala Astronomiska Observatorium, Uppsala, Sweden 1614 California Institute of Technology, Pasadena, Calif. California Institute of Technology, Pasadena, Calif. California, Institute of Technology, Pasadena, Calif. 1615 Israel Institute of Technology, Haifa, Israel Israel Institute of Technology, Haifa, Israel 1616 University of Hawaii, Honolulu, Hawaii, US University of Hawaii, Honolulu, Hawaii, US 1617 Space Telescope Science Inst., Baltimore Space Telescope Science Inst., Baltimore 1618 California Inst. of Tech., Pasadena, CA, US California Inst. of Tech., Pasadena, CA, US 1619 Instituto de Astrofisica de Andalucia, Granada, Spain Instituto de Astrofisica de Andalucia, Granada, Spain Instituto de Astrofiscia de Andalucia, Granada, Spain Instituto di Astrofisica de Andalucia, Granada, Spain Instituto de Astrofisica de Andaulcia, Granada, Spain 1620 Instituto de Astrofisica de Canarias, La Laguna, Spain Instituto de Astrofisica de Canaries, La Laguna, Spain Instituto de Astrofisica de Canarias, La Laguna, Spain Instituto do Astrofisica de Canarias, La Laguna, Spain 1621 National Radio Astronomy Lab., Socorro, NM, US National Radio Astronomy Lab., Socorro, NM, US 1622 Max-Planck-Institut fuer Radioastronomie, Bonn Max-Planck-Institut fuer Radioastronomie, Bonn 1623 CNR, Istituto di Radioastronomia, Bologna CNR, Istituto di Radioastronomia, Bologna 1624 Osservatorio Astornomico Collurania, Teramo, Italy Osservatorio Astornomico Collurania, Teramo, Italy 1625 Carnegie Institution of Washington, Washington Carnegie Institution of Washington, Washington 1626 Service d'Astrophysique, Gif-sur-Yvette, France Service d'Astrophysique, Gif-sur-Yvette, France Service d'Astrophysique, Gif sur Yvette, France Service d'Astrophyique, Gif-sur-Yvette, France 1627 Paris, Observatoire, Paris, France Paris, Observatoire, Paris, France 1628 Carnegie Observatories, Santa Barbara, CA, US Carnegie Observatories, Santa Barbara, CA, US 1629 Besancon Observatoire, Besancon, France Besancon Observatoire, Besancon, France 1630 European Southern Observatory, Santiago de Chile European Southern Observatory, Santiago de Chile 1631 Thames Polytechnic, London, England Thames Polytechnic, London, England 1632 Anglo-Australia Observatory, Epping, Australia Anglo-Australia Observatory, Epping, Australia 1633 Warner and Swasey Observatory, Cleveland, OH Warner and Swasey Observatory, Cleveland, OH Warner and Swasey Observatory, Cleveland OH 1634 Huygens Laboratory, Leiden, Netherlands Huygens Laboratory, Leiden, Netherlands 1635 Lab. for Space Research, Leiden, Netherlands Lab. for Space Research, Leiden, Netherlands 1636 Queen Elizabeth College, London, England Queen Elizabeth College, London, England 1637 Lab. for Space Research Groningen, Netherlands Lab. for Space Research Groningen, Netherlands Lab. for Space Research, Groningen, Netherlands 1638 University College, Dublin, Ireland University College, Dublin, Ireland 1639 University College of London, London, UK University College of London, London, UK 1640 Roma, Osservatorio Astronomico, Rome Roma, Osservatorio Astronomico, Rome 1641 The Observatory, Armagh, Northern Ireland The Observatory, Armagh, Northern Ireland 1642 Centro Astronomico Hispano-Aleman Centro Astronomico Hispano-Aleman 1643 Observatoire de Paris-Meudon, France Observatoire de Paris-Meudon, France 1644 Nice, Obervatoire, Nice, France Nice, Obervatoire, Nice, France Nice, Observatoire, Nice, France 1645 Turku, University, Piikkio, Finland Turku, University, Piikkio, Finland 1646 Osservatorio Astronomico, Italy Osservatorio Astronomico, Italy 1647 Astronomisk Observatorium, Brorfelde, Denmark Astronomisk Observatorium, Brorfelde, Denmark 1648 Universidad de Oriente, Cumana, Venezuela Universidad de Oriente, Cumana, Venezuela 1649 C. E. K. Mees Observatory, Rochester, N.Y. C. E. K. Mees Observatory, Rochester, N.Y. C. E. K. Mees Observatory, Rochester, NY C. E. K. Mees Observatory, Rochester, N.Y. C. E. K. Mees Observatory, Rochester, NY 1650 Marseille, Observatoire, Marseille, France Marseille, Observatoire, Marseille, France Marseille Observatoire, Marseille, France 1651 Paris, Ob servatoire, Meudon, France Paris, Observatorie, Meudon, France Paris, Ob servatoire, Meudon, France Paris Observatoire, Meudon, France 1652 NASA, Johnson Space Center, Houston NASA, Johnson Space Center, Houston 1653 Univ. of Paris XI, Orsay, France Univ. of Paris XI, Orsay, France 1654 Univ. of Patras, Patras, Greece Univ. of Patras, Patras, Greece 1655 Sheffield Hallam University, Sheffield, UK Sheffield Hallam University, Sheffield, UK 1656 Osservatorio Astronomico di Torino, Turin, Italy Osservatorio Astronomico di Torino, Turin, Italy 1657 California Univ., San Diego, La Jolla, CA, US California Univ., San Diego, La Jolla, CA, US 1658 Canada-France-Hawaii Telescope Corp., Kamuela, Hawaii, US Canada-France-Hawaii Telescope Corp., Kamuela, Hawaii, US 1659 IBM T. J. Watson Research Center, Yorktown Heights, NY, US IBM T. J. Watson Research Center, Yorktown Heights, NY, US 1660 California, University, Livermore and Los Angeles, CA California, University, Livermore and Los Angeles, CA 1661 Akademiia Nauk SSSR, Fizicheskii Institut, Pushchino, USSR Akademiia Nauk SSSR, Fizicheskii Institut, Pushchino, USSR 1662 California Institute of Technology, Jet Propulsio California Institute of Technology, Jet Propulsio 1663 Southern California Univ., Los Angeles, CA Southern California Univ., Los Angeles, CA 1664 Canada-France-Hawaii Corp., Kamuela, HI Canada-France-Hawaii Corp., Kamuela, HI 1665 Astronomical Observatory, Belgrade, Yugoslavia Astronomical Observatory, Belgrade, Yugoslavia 1666 European Southern Observatory, Garching European Southern Observatory, Garching 1667 National Bureau of Standards, Boulder, Colo. National Bureau of Standards, Boulder, Colo. 1668 NOAA, Space Environment Lab., Boulder NOAA, Space Environment Lab., Boulder 1669 National Optical Astronomy Observatories, La Serena, Chile National Optical Astronomy Observatories, La Serena, Chile 1670 Louisiana State University, Observatory, Baton Rouge, La. Louisiana State University, Observatory, Baton Rouge, La. 1671 Inst. Astrofisica de Canarias, Tenerife, Spain Inst. Astrofisica de Canarias, Tenerife, Spain 1672 Pic-du-Midi et Toulouse, Observatoires, Toulouse Pic-du-Midi et Toulouse, Observatoires, Toulouse Pic du Midi et Toulouse, Observatoires, Toulouse 1673 N.S.O./Sacramento Peak Observatory, Sunspot, NM, US N.S.O./Sacramento Peak Observatory, Sunspot, NM, US 1674 Royal Greenwich Observatory, Cambridge, MA Royal Greenwich Observatory, Cambridge, MA Royal Greenwich Observatory, Cambridge, UK 1675 High Altitude Observatory, Tucson, Ariz. High Altitude Observatory, Tucson, Ariz. 1676 Astronomical Observatory, Tollose, Denmark Astronomical Observatory, Tollose, Denmark 1677 Louisiana State University Observatory, Baton Rouge Louisiana State University Observatory, Baton Rouge 1678 David Dunlap Observatory, Richmond Hill David Dunlap Observatory, Richmond Hill David Dunlap Osbservatory, Richmond Hill 1679 Ohio State University, Columbus, OH, US Ohio State University, Columbus, OH, US 1680 South London College, London, England South London College, London, England 1681 Louisiana State University Observatory, Baton Rouge, LA Louisiana State University Observatory, Baton Rouge, LA 1682 Yale University Observatory, Bethany, Conn. Yale University Observatory, Bethany, Conn. 1683 Lyon, Observatoire, St.-Genis-Laval, France Lyon, Observatoire, St.-Genis-Laval, France 1684 Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Lindfield, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Lindfield, New South Wales, Australia 1685 Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Sydney, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Sydney, Australia 1686 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Canberra, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Canberra, Australia 1687 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Sydney, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Sydney, Australia 1688 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Parker, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Parker, New South Wales, Australia 1689 Commonwealth Scientific and Industrial Research Organization, Radiophysics Div., Epping, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Radiophysics Div., Epping, New South Wales, Australia 1690 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div., of Radiophysics, Epping, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiopphysics, Epping, New South Wales, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales Australia Commonwealth Scientific and Industrial Research Organisation, Div. of Radiophysics, Epping, New South Wales, Australia 1691 Commonwealth Scientific and Industrial Research Organization, Div., of Applied Physics, Lindfield, Australia Commonwealth Scientific and Industrial Research Organization, Div., of Applied Physics, Lindfield, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Lindfield, Australia 1692 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Melbourne, Australia Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Melbourne, Australia 1693 Science and Engineering Research Council, Rutherford and Appleton Laboratory, Didcot, Oxon, England Science and Engineering Research Council, Rutherford and Appleton Laboratory, Didcot, Oxon, England 1694 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon., England Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon., England Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon, England 1695 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon 1696 Anglo-Australian Observatory, Epping, New South Wales, Australia Anglo-Australion Observatory, Epping, New South Wales, Australia Anglo-Australian Observatory, Epping, New South Wales, Australia Anglo-Astralian Observatory, Epping, New South Wales, Australia