Yohkoh

Launch Successful

Launch Details

Date: 30 Aug 1991, 02:30 am UTC

Rocket: Mu-3S-II (Mu)

Provider: Institute of Space and Astronautical Science

Mission

Type: Earth Science

Orbit: Low Earth Orbit

Pad: Mu Center, Uchinoura Space Center, Japan

Mission Description

The objective of Solar A or Yohkoh (Japanese for sunbeam) is to study the high-energy radiations from solar flares (hard and soft X-rays and energetic neutrons) as well as quiet structures and pre-flare conditions. The mission is a successor to Hinotori, a previous Japanese spacecraft flown at the previous solar activity maximum in 1981.