CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0166
SL-4 R/B
SL-4 R/B (NORAD 12386) re-entered Earth’s atmosphere on 13 April 1981, after 6 days in orbit.
Official date
NORAD number
12386
International designator
1981-032B
Object type
Rocket body
Country
USSR
Launched
7 Apr 1981Plesetsk Cosmodrome
Re-entered (UTC)
13 Apr 1981UTC calendar day
Time in orbit
6 days6 days
How it ended
Re-entered (natural decay)
Latitude range
72.9°N to 72.9°SFinal inclination 72.9°
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 72.9°, allowed a re-entry anywhere between 72.9°N and 72.9°S.
Life in orbit
6 daysAlso ended on 13 Apr 1981
28 entries1981-0162Kosmos-1204 SS 111981-0165SL-6 R/B(1)1981-0138OPS 8464 DEB *1981-0139TITAN 3C TRANSTAGE DEB1981-0140TITAN 3C TRANSTAGE DEB1981-0141TITAN 3C TRANSTAGE DEB1981-0142COSMOS 249 DEB1981-0143COSMOS 252 DEB *1981-0144SL-8 DEB1981-0145THORAD AGENA D DEB1981-0146SCOUT B DEB1981-0147THORAD AGENA D DEB+16 more
From the same launch
1981-032
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0166
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0166
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.