CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2017-0064
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 9980) re-entered Earth’s atmosphere on 22 April 2017, after 39 years, 11 months in orbit.
Official date
NORAD number
9980
International designator
1977-032D
Object type
Rocket body
Country
USSR
Launched
28 Apr 1977Plesetsk Cosmodrome
Re-entered (UTC)
22 Apr 2017UTC calendar day
Time in orbit
39 years, 11 months14,604 days
How it ended
Re-entered (natural decay)
Latitude range
62.2°N to 62.2°SFinal inclination 62.2°
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 62.2°, allowed a re-entry anywhere between 62.2°N and 62.2°S.
Life in orbit
39 years, 11 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1977-032
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2017-0064
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2017-0064
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.