JAXA/ISAS's HINOTORI (ASTRO-A) was a solar-observation mission launched on 1981-02-21 aboard M-3S-2 from Uchinoura. It imaged solar flares in hard X-rays and measured solar particles, X-ray bursts, gamma rays, and related plasma phenomena, contributing observations during the international solar-maximum campaign until operations ended on 1991-07-11.
Alerts are unavailable because this mission is no longer active.