1. NASA, Goddard Space Flight Center, Greenbelt, Maryland
2. Saitama University, Department of Physics, Sakura-ku, Saitama
3. Universities Space Research Association, Columbia, Maryland
4. MIT, Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts
5. Nara University of Education, Department of Teacher Training and School of Education, Takabatake-cho
6. U.S. Naval Observatory, Washington, DC
7. Aoyama Gakuin University, Department of Physics and Mathematics, Sagamihara, Kanagawa
8. Hiroshima University, School of Science, Higashi-Hiroshima, Hiroshima