1. School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK
2. Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
3. Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
4. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, Russia
5. Armagh Observatory, College Hill, Armagh BT61 9DG, UK
6. Jet Propulsion Laboratory, M/S 183-401, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
7. Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
8. ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, Spain
9. LESIA, Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, France
10. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
11. Department of Physics, American University, 4400 Massachusetts Avenue NW, Washington, DC 20016, USA
12. Institute of Astronomy and National Astronomical Observatory, 72 Tsarigradsko Chaussée Boulevard, BG-1784 Sofia, Bulgaria
13. Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lagrange, France
14. IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Lille, France
15. University of Texas Austin/McDonald Observatory, 1 University Station, Austin, TX 78712, USA
16. Research School of Astronomy and Astrophysics, The Australian National University, Canberra, Australian Capital Territory, Australia
17. Gemini Observatory, Recinto AURA, Colina El Pino s/n, Casilla 603, La Serena, Chile
18. The UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
19. Instituto de Astrofísica de Canarias (IAC), C/Vía Láctea s/n, 38205 La Laguna, Spain
20. Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
21. Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
22. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
23. NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
24. Department of Physics, The Catholic University of America, Washington, DC 20064, USA
25. Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
26. School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
27. Swedish Institute of Space Physics, Ångströmlaboratoriet, Lägerhyddsvägen 1, 751 21 Uppsala, Sweden
28. INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50 125 Firenze, Italy
29. Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720, USA
30. Department of Physics and Astronomy, University of Missouri - St. Louis, St. Louis, MO 63121, USA
31. Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
32. Institut UTINAM, UMR 6213 CNRS-Université de Franche Comté, Besançon, France
33. CNRS/INSU; UPMC (Sorbonne Univ.); UVSQ (UPSay); LATMOS-IPSL, 11 Bld d'Alembert, 78280 Guyancourt, France
34. European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
35. Department of Physics, University of the West Indies, St Augustine, Trinidad, West Indies
36. Space Telescope Science Institute, Baltimore, MD 21218, USA
37. University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
38. Astronomical Institute of the Slovak Academy of Sciences, 05960 Tatranská Lomnica, Slovak Republic
39. Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking RH5 6NT, UK
40. The Centre for Planetary Sciences at UCL/Birkbeck, Gower Street, London WC1E 6BT, UK
41. Main Astronomical Observatory of National Academy of Sciences, Kyiv, UKraine
42. Research and Scientific Support Department, European Space Agency, 2201 Noordwijk, The Netherlands
43. Université de Toulouse, UPS-OMP, IRAP-CNRS, Toulouse, France
44. Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
45. UPMC (Sorbonne Univ.); UVSQ (UPSay); CNRS/INSU; LATMOS-IPSL, BC 102, 4 Place Jussieu, 75005 Paris, France
46. Graduate Institute of Astronomy, National Central University, No. 300 Zhongda Road, Zhongli District, Taoyuan City, 320 Taiwan
47. Las Cumbres Observatory, 6740 Cortona Drive, Ste. 102, Goleta, CA 93117, USA
48. Centre for Astrophysics and Planetary Science, School of Physical Sciences, The University of Kent, Canterbury CT2 7NH, UK
49. Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF, UK
50. ESA SSA-NEO Coordination Centre, Frascati (RM), Italy
51. Caribbean Institute of Astronomy, Trinidad, West Indies
52. European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
53. Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Apartado 1761, Lima, Perú
54. Nordic Optical Telescope, Apartado 474, 38700 Santa Cruz de La Palma, Santa Cruz de Tenerife, Spain
55. University of Franche-Comté, Observatoire des Sciences de l'Univers THETA, Institut UTINAM - UMR CNRS 6213, BP 1615, 25010 Besançon Cedex, France
56. SETI Institute, 189 Bernardo Avenue Suite 200, Mountain View, CA 94043, USA
57. Lowell Observatory, 1400 W. Mars Hill Road, Flagstaff, AZ 86001, USA
58. Scientific Support Office, European Space Agency, 2201 AZ Noordwijk, The Netherlands
59. Department of Physics, Assam University, Silchar 788011, India
60. Yunnan Observatories, CAS, China, PO Box 110, Kunming 650011, Yunnan Province, People's Republic of China
61. Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, People's Republic of China
62. NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035-1000, USA
63. National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan