CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0402
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 5713) re-entered Earth’s atmosphere on 22 September 1977, after 5 years, 9 months in orbit.
Official date
NORAD number
5713
International designator
1971-115B
Object type
Rocket body
Country
USSR
Launched
19 Dec 1971Plesetsk Cosmodrome
Re-entered (UTC)
22 Sep 1977UTC calendar day
Time in orbit
5 years, 9 months2,104 days
How it ended
Re-entered (natural decay)
Latitude range
64.7°N to 64.7°SFinal inclination 64.7°
Mass
4,500 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 64.7°, allowed a re-entry anywhere between 64.7°N and 64.7°S.
Life in orbit
5 years, 9 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 22 Sep 1977
2 entriesFrom the same launch
1971-115
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0402
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0402
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.