*J. F. Fennell¹、J. B. Blake¹、D. Turner¹、J. Clemmons¹、S. Claudepierre¹、A. Jaynes²、B. Mauk³、D. Baker²、S. Kanekal⁵、J. Burch⁴ (1.Aerospace Corporation Los Angeles、2.University of Colorado、3.Johns Hopkins Applied Physics Laboratory、4.Southwest Research Institute、5.Goddard Space Flight Center)