CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1984-0113
SL-11 R/B
SL-11 R/B (NORAD 4923) re-entered Earth’s atmosphere on 21 March 1984, after 13 years, 1 month in orbit.
Official date
NORAD number
4923
International designator
1971-010B
Object type
Rocket body
Country
USSR
Launched
9 Feb 1971Plesetsk Cosmodrome
Re-entered (UTC)
21 Mar 1984UTC calendar day
Time in orbit
13 years, 1 month4,789 days
How it ended
Re-entered (natural decay)
Latitude range
65.8°N to 65.8°SFinal inclination 65.8°
Mass
1,434 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 65.8°, allowed a re-entry anywhere between 65.8°N and 65.8°S.
Life in orbit
13 years, 1 monthSL-11 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 21 Mar 1984
3 entries
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1984-0113
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1984-0113
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.