CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0534
SL-4 R/B
SL-4 R/B (NORAD 12913) re-entered Earth’s atmosphere on 23 October 1981, after 8 days in orbit.
Official date
NORAD number
12913
International designator
1981-104B
Object type
Rocket body
Country
USSR
Launched
15 Oct 1981Baikonur Cosmodrome
Re-entered (UTC)
23 Oct 1981UTC calendar day
Time in orbit
8 days8 days
How it ended
Re-entered (natural decay)
Latitude range
70.3°N to 70.3°SFinal inclination 70.3°
Mass
2,350 kg
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 70.3°, allowed a re-entry anywhere between 70.3°N and 70.3°S.
Life in orbit
8 daysAlso ended on 23 Oct 1981
2 entriesFrom the same launch
1981-104
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0534
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0534
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.