Akebono (known as EXOS-D before launch) is a satellite to study aurora and Earth's magnetosphere environment. It was developed by Institute of Space and Astronautical Science and launched by M-3SII rocket on February 21, 1989.
| Names | EXOS-D | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mission type | Earth observation | ||||||||||||||||||
| Operator | ISAS · University of Tokyo | ||||||||||||||||||
| COSPAR ID | 1989-016A | ||||||||||||||||||
| SATCAT no. | 19822 | ||||||||||||||||||
| Mission duration | Final: 26 years, 2 months, 1 day | ||||||||||||||||||
| Spacecraft properties | |||||||||||||||||||
| Launch mass | 294 kg (648 lb) | ||||||||||||||||||
| Start of mission | |||||||||||||||||||
| Launch date | 21 February 1989, 23:30 UTC | ||||||||||||||||||
| Rocket | M-3SII, mission M-3SII-1 | ||||||||||||||||||
| Launch site | Uchinoura Space Center, Japan | ||||||||||||||||||
| End of mission | |||||||||||||||||||
| Disposal | Decommissioned | ||||||||||||||||||
| Deactivated | 23 April 2015 | ||||||||||||||||||
| Decay date | 26 November 2024[1] | ||||||||||||||||||
| Orbital parameters | |||||||||||||||||||
| Reference system | Geocentric | ||||||||||||||||||
| Regime | Low Earth | ||||||||||||||||||
| Eccentricity | 0.36552 | ||||||||||||||||||
| Perigee altitude | 300 km (190 mi) | ||||||||||||||||||
| Apogee altitude | 8,000 km (5,000 mi) | ||||||||||||||||||
| Inclination | 75° | ||||||||||||||||||
| Epoch | 20 February 1989, 19:00 UTC | ||||||||||||||||||
| |||||||||||||||||||
After 26 years of successful observation, operation was terminated on April 23, 2015, due to the degradation of solar cells and the decay of orbit.[2]
See also
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Notes
edit- ^ "Atmospheric re-entry of the magnetosphere observation satellite, AKEBONO". Institute of Space and Astronautical Science. 27 November 2024. Retrieved 27 November 2024.
- ^ 磁気圏観測衛星「あけぼの」の運用終了について [On Termination of Operation of the Magnetosphere Observation Satellite Akebono]. JAXA. April 23, 2015. Retrieved April 23, 2015.
External links
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