CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1968-0285

COSMOS 251

COSMOS 251 (NORAD 3528) re-entered Earth’s atmosphere on 18 November 1968, after 18 days in orbit.

Official date
NORAD number
3528
International designator
1968-096A
Object type
Spacecraft
Country
USSR
Launched
31 Oct 1968Baikonur Cosmodrome
Re-entered (UTC)
18 Nov 1968UTC calendar day
Time in orbit
18 days18 days
How it ended
Re-entered (natural decay)
Latitude range
64.9°N to 64.9°SFinal inclination 64.9°
Mass
430 kg
Operator
TsUKOS
Built by
TsKBEM Fil. 3
Bus
Zenit KDU

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 64.9°, allowed a re-entry anywhere between 64.9°N and 64.9°S.

Life in orbit

18 days

Also ended on 18 Nov 1968

1 entry
1968-0286COSMOS 253

From the same launch

1968-096
1968-0271SL-4 R/B
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1968-0285
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