CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0471
SL-8 R/B
SL-8 R/B (NORAD 10420) re-entered Earth’s atmosphere on 8 November 1977, after 18 days in orbit.
Official date
NORAD number
10420
International designator
1977-101B
Object type
Rocket body
Country
USSR
Launched
21 Oct 1977Plesetsk Cosmodrome
Re-entered (UTC)
8 Nov 1977UTC calendar day
Time in orbit
18 days18 days
How it ended
Re-entered (natural decay)
Latitude range
65.8°N to 65.8°SFinal inclination 65.8°
Mass
1,434 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 65.8°, allowed a re-entry anywhere between 65.8°N and 65.8°S.
Life in orbit
18 daysSL-8 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1977-101
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0471
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0471
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.