CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2001-0127
SL-3 R/B
SL-3 R/B (NORAD 5143) re-entered Earth’s atmosphere on 19 April 2001, after 30 years in orbit.
Official date
NORAD number
5143
International designator
1971-031B
Object type
Rocket body
Country
USSR
Launched
17 Apr 1971Plesetsk Cosmodrome
Re-entered (UTC)
19 Apr 2001UTC calendar day
Time in orbit
30 years10,960 days
How it ended
Re-entered (natural decay)
Latitude range
81.2°N to 81.2°SFinal inclination 81.2°
Mass
1,440 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 81.2°, allowed a re-entry anywhere between 81.2°N and 81.2°S.
Life in orbit
30 yearsSL-3 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 19 Apr 2001
1 entryFrom the same launch
1971-031
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2001-0127
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2001-0127
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.