CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0334
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 5368) re-entered Earth’s atmosphere on 14 August 1977, after 6 years in orbit.
Official date
NORAD number
5368
International designator
1971-064D
Object type
Rocket body
Country
USSR
Launched
28 Jul 1971Plesetsk Cosmodrome
Re-entered (UTC)
14 Aug 1977UTC calendar day
Time in orbit
6 years2,209 days
How it ended
Re-entered (natural decay)
Latitude range
64.5°N to 64.5°SFinal inclination 64.5°
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 64.5°, allowed a re-entry anywhere between 64.5°N and 64.5°S.
Life in orbit
6 yearsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 14 Aug 1977
1 entryFrom the same launch
1971-064
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0334
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0334
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.