Payload
EXPLORER 21 (IMP-2)
DecayedPayloadHEO
A catalogued spacecraft payload.
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Launch
- Launch date
- October 4, 1964 at 03:45 AM UTC
- Launch site
- Cape Canaveral SFS, USA
- Launched by
- Thor Delta C →
- Operator
- United States Air Force
- Mission
- Explorer 21
- Launch record
- View full launch →
Orbit
- Orbit regime
- HEO
- Apoapsis
- 94,291 km
- Periapsis
- 917 km
- Inclination
- 33.72°
- Orbital period
- 2080.34 min
Identity
- COSPAR (Int'l)
- 1964-060A
- NORAD catalog №
- 889
- Object type
- Payload
- Owner / operator
United States- Status
- Decayed
- Decay / reentry
- January 30, 1966
End of mission
- Last active / ended
- January 30, 1966
- Time in service
- 1.3 years
- Fate
- Reentered Earth's atmosphere and was destroyed.
- Final status
- Decayed