CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1983-0037
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 5923) re-entered Earth’s atmosphere on 20 February 1983, after 10 years, 10 months in orbit.
Official date
NORAD number
5923
International designator
1972-023D
Object type
Rocket body
Country
USSR
Launched
31 Mar 1972Baikonur Cosmodrome
Re-entered (UTC)
20 Feb 1983UTC calendar day
Time in orbit
10 years, 10 months3,978 days
How it ended
Re-entered (natural decay)
Latitude range
51.9°N to 51.9°SFinal inclination 51.9°
Mass
4,500 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 51.9°, allowed a re-entry anywhere between 51.9°N and 51.9°S.
Life in orbit
10 years, 10 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1972-023
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1983-0037
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1983-0037
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.