Akebono (satellite)

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Akebono
Operator Institute of Space and Astronautical Science, University of Tokyo
COSPAR ID 1989-016A
SATCAT № 19822
Spacecraft properties
Spacecraft type Orbiter
Payload mass 294.0 kg (648.2 lb)
Start of mission
Launch date 21 February, 1989 23:30:00 UTC
Rocket Mu-3SII-1
Launch site Uchinoura Space Center, Japan
End of mission
Deactivated 23 April, 2015
Orbital parameters
Perigee 8,000 km (5,000 mi)
Apogee 300 km (190 mi)
Inclination 75°
Epoch 21 February, 1989


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 22, 1989.

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]

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