Success
Yohkoh
Earth Science
Institute of Space and Astronautical Science(ISAS)Government
Mu-3S-II
LEOorbit
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.
Friday, August 30, 1991 at 2:30 AM
Mission details
Orbital Attempt
#3,661
ISAS Mission
#26
Pad Launch
#21
Location Launch
#26
Designator
1991-062
Launch Window
NET
Aug 30, 1991, 2:30 AM
Schedule Changes
1 update
Uchinoura Space Center, Japan
The Uchinoura Space Center is a space launch facility in the Japanese town of Kimotsuki, Kagoshima Prefecture. All of Japan's scientific satellites were launched from Uchinoura prior to the M-V launch vehicles being decommissioned in 2006. It continues to be used for suborbital launches, stratospheric balloons and has also been used for the Epsilon orbital launch vehicle. Additionally, the center has antennas for communication with interplanetary space probes.
Timezone
Asia/Tokyo
Local Launch Time
Aug 30, 1991, 11:30 AM
Total Launches
43
Total Landings
0
Coordinates
31.2519, 131.0819
Mu-3S-II Specs
The Mu, also known as M, was a series of Japanese solid-fuelled carrier rockets, which were launched from Uchinoura between 1966 and 2006. Originally developed by Japan's Institute of Space and Astronautical Science, Mu rockets were later operated by Japan Aerospace Exploration Agency following ISAS becoming part of it.
Length
27.8 m
Diameter
1.41 m
Launch Mass
61 t
Thrust
1,930 kN
LEO Capacity
800 kg
Reusable
No
Maiden Flight
1985
Fastest Turnaround
7mo 13d
Total Launches
8
Successful
7
Failed
1
Consecutive Success
0
Maiden flight: Jan 7, 1985
Institute of Space and Astronautical Science
ISAS is a Japanese national research organization of astrophysics using rockets, astronomical satellites and interplanetary probes which played a major role in Japan's space development.
Total Launches
32
Successful
24
Failed
8
Pending
0
Consecutive Success
1