CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1968-0283
COSMOS 251 DEB
COSMOS 251 DEB (NORAD 3540) re-entered Earth’s atmosphere on 16 November 1968.
Official dateFragment record
NORAD number
3540
International designator
1968-096C
Object type
Fragment
Country
USSR
Parent launched
31 Oct 1968Baikonur Cosmodrome
Re-entered (UTC)
16 Nov 1968UTC calendar day
Time since launch
16 days16 days
How it ended
Re-entered (natural decay)
Latitude range
64.9°N to 64.9°SFinal inclination 64.9°
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 64.9°, allowed a re-entry anywhere between 64.9°N and 64.9°S.
Life in orbit
Also ended on 16 Nov 1968
1 entryFrom the same launch
1968-096
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1968-0283
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1968-0283
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.