CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2000-0281
SL-12 R/B(AUX MOTOR)
SL-12 R/B(AUX MOTOR) (NORAD 21829) re-entered Earth’s atmosphere on 8 October 2000, after 8 years, 9 months in orbit.
Official date
NORAD number
21829
International designator
1991-087F
Object type
Rocket body
Country
USSR
Launched
19 Dec 1991Baikonur Cosmodrome
Re-entered (UTC)
8 Oct 2000UTC calendar day
Time in orbit
8 years, 9 months3,216 days
How it ended
Re-entered (natural decay)
Latitude range
46.4°N to 46.4°SFinal inclination 46.4°
Mass
120 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 46.4°, allowed a re-entry anywhere between 46.4°N and 46.4°S.
Life in orbit
8 years, 9 monthsSL-12 R/B(AUX MOTOR)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 8 Oct 2000
2 entriesFrom the same launch
1991-087
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2000-0281
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2000-0281
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.