Payload
DISCOVERER 21
DecayedPayloadLEO
DISCOVERER 21 is a United States payload satellite, launched on February 18, 1961 into LEO. It has since re-entered the atmosphere.
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Launch
- Launch date
- February 18, 1961 at 10:57 PM UTC
- Launch site
- Vandenberg SFB, USA
- Launched by
- Thor DM-21 Agena-B →
- Operator
- United States Air Force
- Launch record
- View full launch →
Orbit
- Orbit regime
- LEO
- Apoapsis
- 276 km
- Periapsis
- 204 km
- Inclination
- 80.63°
- Orbital period
- 89.3 min
Spacecraft
- Operator
- United States
- Launch mass
- 1,090.19 kg
Identity
- COSPAR (Int'l)
- 1961-006A
- NORAD catalog №
- 84
- Object type
- Payload
- Owner / operator
United States- Status
- Decayed
- Decay / reentry
- April 20, 1962
End of mission
- Last active / ended
- April 20, 1962
- Time in service
- 1.2 years
- Fate
- Reentered Earth's atmosphere and was destroyed.
- Final status
- Decayed