CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1962-0014
DISCOVERER 21
DISCOVERER 21 (NORAD 84) came down while still attached to its host on 20 April 1962, after 1 year, 2 months in orbit.
Official date
NORAD number
84
International designator
1961-006A
Object type
Spacecraft
Country
United States
Launched
18 Feb 1961Vandenberg
Re-entered (UTC)
20 Apr 1962UTC calendar day
Time in orbit
1 year, 2 months426 days
How it ended
Came down attached to its host
Latitude range
80.6°N to 80.6°SFinal inclination 80.6°
Mass
146 kg
Operator
USAF BMD / ARPA
Built by
LMSD/Sunnyvale
Bus
CORONA
Programme
CORONA Early
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 80.6°, allowed a re-entry anywhere between 80.6°N and 80.6°S.
Life in orbit
1 year, 2 monthsDISCOVERER 21’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 20 Apr 1962
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1962-0014
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1962-0014
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.