Akebono (known as EXOS-D before launch) is a satellite to study aurora and Earth's magnetosphere environment. Named from the Japanese for the ‘rising Sun’. It was developed by Institute of Space and Astronautical Science and launched by M-3SII rocket on February 22, 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 | ||
| 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 | ||
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| Instruments | |
|---|---|
| EFD | Electric Field Detectors |
| MGF | Magnetic Field Detector |
| VLF | Very Low Frequency Wave Detectors |
| PWS | Stimulated Plasma Wave and High Frequency Plasma Wave Detectors |
| LEP | Low Energy Particle Detectors |
| SMS | Suprathermal Ion Mass Spectrometer |
| TED | Velocity Distribution of Thermal Electrons |
| ATV | Visible and UV Auroral Television |
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.[1]
See also
Spaceflight portal
International Solar-Terrestrial Physics Science Initiative
Notes
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.
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