CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1963-0080

COSMOS 21

COSMOS 21 (NORAD 687) re-entered Earth’s atmosphere on 14 November 1963, after 3 days in orbit.

Official date
NORAD number
687
International designator
1963-044A
Object type
Spacecraft
Country
USSR
Launched
11 Nov 1963Baikonur Cosmodrome
Re-entered (UTC)
14 Nov 1963UTC calendar day
Time in orbit
3 days3 days
How it ended
Re-entered (natural decay)
Latitude range
64.8°N to 64.8°SFinal inclination 64.8°
Mass
490 kg
Operator
OKB-1
Built by
OKB-1
Bus
MV
Programme
3MV

Where it came down

Latitude band its orbit allowed
Exact position not recorded

No position was recorded for this re-entry. Its final orbit, inclined at 64.8°, allowed a re-entry anywhere between 64.8°N and 64.8°S.

Life in orbit

3 days

From the same launch

1963-044
1963-0079SL-6 R/B
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1963-0080
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