CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1980-0374
SL-4 DEB
SL-4 DEB (NORAD 11979) re-entered Earth’s atmosphere on 20 September 1980.
Official dateFragment record
NORAD number
11979
International designator
1980-075C
Object type
Fragment
Country
USSR
Parent launched
18 Sep 1980Baikonur Cosmodrome
Re-entered (UTC)
20 Sep 1980UTC calendar dayAlso recorded as 21 Sep 1980
Time since launch
2 days2 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
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 51.6°, allowed a re-entry anywhere between 51.6°N and 51.6°S.
Life in orbit
Also ended on 20 Sep 1980
1 entryFrom the same launch
1980-075
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1980-0374
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1980-0374
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.