CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0419
SL-8 R/B
SL-8 R/B (NORAD 9899) re-entered Earth’s atmosphere on 6 September 1979, after 2 years, 5 months in orbit.
Official date
NORAD number
9899
International designator
1977-023B
Object type
Rocket body
Country
USSR
Launched
29 Mar 1977Plesetsk Cosmodrome
Re-entered (UTC)
6 Sep 1979UTC calendar day
Time in orbit
2 years, 5 months891 days
How it ended
Re-entered (natural decay)
Latitude range
82.9°N to 82.9°SFinal inclination 82.9°
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 82.9°, allowed a re-entry anywhere between 82.9°N and 82.9°S.
Life in orbit
2 years, 5 monthsSL-8 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 6 Sep 1979
5 entriesFrom the same launch
1977-023
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0419
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0419
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.