CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1970-0203
SL-4 R/B
SL-4 R/B (NORAD 4539) re-entered Earth’s atmosphere on 22 September 1970, after 5 days in orbit.
Official date
NORAD number
4539
International designator
1970-074B
Object type
Rocket body
Country
USSR
Launched
17 Sep 1970Baikonur Cosmodrome
Re-entered (UTC)
22 Sep 1970UTC calendar day
Time in orbit
5 days5 days
How it ended
Re-entered (natural decay)
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
Mass
2,350 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 65.0°, allowed a re-entry anywhere between 65.0°N and 65.0°S.
Life in orbit
5 daysAlso ended on 22 Sep 1970
1 entryFrom the same launch
1970-074
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1970-0203
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1970-0203
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.