CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0529
SL-4 DEB
SL-4 DEB (NORAD 10543) re-entered Earth’s atmosphere on 31 December 1977.
Official dateFragment record
NORAD number
10543
International designator
1977-124C
Object type
Fragment
Country
USSR
Parent launched
27 Dec 1977Baikonur Cosmodrome
Re-entered (UTC)
31 Dec 1977UTC calendar day
Time since launch
4 days4 days
How it ended
Re-entered (natural decay)
Latitude range
71.5°N to 71.5°SFinal inclination 71.5°
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 71.5°, allowed a re-entry anywhere between 71.5°N and 71.5°S.
Life in orbit
Also ended on 31 Dec 1977
1 entryFrom the same launch
1977-124
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0529
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0529
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.