CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0531
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 9579) re-entered Earth’s atmosphere on 7 December 1991, after 15 years in orbit.
Official date
NORAD number
9579
International designator
1976-116D
Object type
Rocket body
Country
USSR
Launched
2 Dec 1976Plesetsk Cosmodrome
Re-entered (UTC)
7 Dec 1991UTC calendar dayAlso recorded as 19 Sep 1991
Time in orbit
15 years5,483 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
15 yearsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 7 Dec 1991
2 entriesFrom the same launch
1976-116
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0531
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0531
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.