Shinsei

Launch data: Designation 05485 / 71080A Launch date 28 Sep 1971 - 04:00 UT Launch site Kagoshima Space Center Launch vehicle Mu-4S (#M-4S-3) Mission Scientific: ionosphere study Elliptical Earth orbit: Perigee/Apogee 872 x 1866 km Inclination 32.1° Period 113.1 min

Spacecraft data: Prime contractor   Platform   Operator   Mass at launch  66 kg Dry Mass   kg Basic shape  26-hedron in asphere Dimension (m)  0.75m diameter Equipment   Solar array   Stabilization   Propulsion   DC power   Design lifetime

Credit: JAXA

Scientific Instruments:

• 1. Shortwave band solar radio monitor (RN)
• 2. Cosmic ray monitor (CR)
• 3. Ionosphere plasma monitor (ID)
• 4. Geomagnetism attitude system (GAS)
• 5. In-satellite environment monitor (HK)
• 6. Telemetry transmitter (TM-SA)
• 7. Data recorder (DR)
• 8. Command receiver (CM-SA)
• 9. Power supply (PS)
• 10. Satellite timer (MS-SA)
• 11. Nutation damper (ND)

Decay:

Mission details:

• Objectives: Observation of ionosphere, cosmic rays, shortwave band solar noise, etc.
• After insertion into orbit, Uchinoura received signals to confirm the ionosphere plasma probe deployment, solar-radio antenna extension, and nutation damper operation, and the satellite began operating. The electron-temperature probe was damaged immediately after the satellite was exposed to space and one of the CR's Geiger counters malfunctioned. All other instruments operated normally.
• Results: Three onboard instruments found abnormal ionization around South America and solar-radio observation revealed the generation mechanism of shortwave-band solar-radio waves.