CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1986-0541
COSMOS 1781 DEB
COSMOS 1781 DEB (NORAD 16991) re-entered Earth’s atmosphere on 29 December 1986.
Official dateFragment record
NORAD number
16991
International designator
1986-072G
Object type
Fragment
Country
USSR
Parent launched
17 Sep 1986Baikonur Cosmodrome
Re-entered (UTC)
29 Dec 1986UTC calendar day
Time since launch
3 months103 days
How it ended
Re-entered (natural decay)
Latitude range
70.3°N to 70.3°SFinal inclination 70.3°
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 70.3°, allowed a re-entry anywhere between 70.3°N and 70.3°S.
Life in orbit
COSMOS 1781 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 29 Dec 1986
3 entriesFrom the same launch
1986-072
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1986-0541
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1986-0541
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.