1. NASA Goddard Space Flight Ctr. (United States)
2. SRON Netherlands Institute for Space Research (Netherlands)
3. Univ. de Genève (Switzerland)
4. Lawrence Livermore National Lab. (United States)
5. Tokyo Metropolitan Univ. (Japan)
6. Kanazawa Univ. (Japan)
7. Rikkyo Univ. (Japan)
8. RIKEN (Japan)
9. Kyushu Univ. (Japan)
10. Japan Aerospace Exploration Agency (Japan)
11. Univ. of Wisconsin-Madison (United States)
12. Nagoya Univ. (Japan)
13. Tohoku Gakuin Univ. (Japan)
14. Kindai Univ. (Japan)
15. Tohoku Univ. (Japan)
16. Nara Women's Univ. (Japan)
17. Observatoire de Genève (Switzerland)
18. Tokyo Univ. of Science (Japan)
19. Aoyama Gakuin Univ. (Japan)
20. Yale Univ. (United States)
21. Saitama Univ. (Japan)
22. Tokyo Institute of Technology (Japan)