CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1999-0435
SL-12 DEB
SL-12 DEB (NORAD 21960) re-entered Earth’s atmosphere on 31 December 1999.
Official dateFragment record
NORAD number
21960
International designator
1985-118M
Object type
Fragment
Country
USSR
Parent launched
24 Dec 1985Baikonur Cosmodrome
Re-entered (UTC)
31 Dec 1999UTC calendar day
Time since launch
14 years5,120 days
How it ended
Re-entered (natural decay)
Latitude range
64.5°N to 64.5°SFinal inclination 64.5°
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 64.5°, allowed a re-entry anywhere between 64.5°N and 64.5°S.
Life in orbit
SL-12 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1985-118
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1999-0435
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1999-0435
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.