JAXA/ISAS's OHZORA (EXOS-C) was a middle-atmosphere observation mission launched on 1984-02-14 aboard M-3S-4 from Uchinoura. It studied the structure and composition of the middle atmosphere and the magnetosphere, participated in the International Middle Atmosphere Program, and operated until 1988-12-26 despite early launch-separation contamination.
Alerts are unavailable because this mission is no longer active.