CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1971-0061
SL-7 R/B
SL-7 R/B (NORAD 4537) re-entered Earth’s atmosphere on 28 March 1971, after 6 months in orbit.
Official date
NORAD number
4537
International designator
1970-073B
Object type
Rocket body
Country
USSR
Launched
16 Sep 1970Plesetsk Cosmodrome
Re-entered (UTC)
28 Mar 1971UTC calendar day
Time in orbit
6 months193 days
How it ended
Re-entered (natural decay)
Latitude range
70.9°N to 70.9°SFinal inclination 70.9°
Mass
840 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 70.9°, allowed a re-entry anywhere between 70.9°N and 70.9°S.
Life in orbit
6 monthsSL-7 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 28 Mar 1971
1 entryFrom the same launch
1970-073
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1971-0061
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1971-0061
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.