CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0581
THOR DELTA 1 DEB
THOR DELTA 1 DEB (NORAD 12891) re-entered Earth’s atmosphere on 14 November 1981.
Official dateFragment record
NORAD number
12891
International designator
1981-100D
Object type
Fragment
Country
United States
Parent launched
6 Oct 1981Vandenberg
Re-entered (UTC)
14 Nov 1981UTC calendar day
Time since launch
1 month39 days
How it ended
Re-entered (natural decay)
Latitude range
82.5°N to 82.5°SFinal inclination 97.5°
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 97.5°, allowed a re-entry anywhere between 82.5°N and 82.5°S.
Life in orbit
THOR DELTA 1 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 14 Nov 1981
2 entriesFrom the same launch
1981-100
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0581
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0581
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.