CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0623
SL-4 DEB
SL-4 DEB (NORAD 12991) re-entered Earth’s atmosphere on 10 December 1981.
Official dateFragment record
NORAD number
12991
International designator
1981-118C
Object type
Fragment
Country
USSR
Parent launched
4 Dec 1981Baikonur Cosmodrome
Re-entered (UTC)
10 Dec 1981UTC calendar day
Time since launch
6 days6 days
How it ended
Re-entered (natural decay)
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
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 65.0°, allowed a re-entry anywhere between 65.0°N and 65.0°S.
Life in orbit
Also ended on 10 Dec 1981
2 entriesFrom the same launch
1981-118
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0623
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0623
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.