CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1975-0060
SL-7 R/B
SL-7 R/B (NORAD 7539) re-entered Earth’s atmosphere on 15 March 1975, after 3 months in orbit.
Official date
NORAD number
7539
International designator
1974-091B
Object type
Rocket body
Country
USSR
Launched
20 Nov 1974Plesetsk Cosmodrome
Re-entered (UTC)
15 Mar 1975UTC calendar day
Time in orbit
3 months115 days
How it ended
Re-entered (natural decay)
Latitude range
71.0°N to 71.0°SFinal inclination 71.0°
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 71.0°, allowed a re-entry anywhere between 71.0°N and 71.0°S.
Life in orbit
3 monthsSL-7 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 15 Mar 1975
1 entryFrom the same launch
1974-091
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1975-0060
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1975-0060
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.