CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0182
DELTA 1 DEB
DELTA 1 DEB (NORAD 9317) re-entered Earth’s atmosphere on 21 April 1981.
Official dateFragment record
NORAD number
9317
International designator
1975-004EU
Object type
Fragment
Country
United States
Parent launched
22 Jan 1975Vandenberg
Re-entered (UTC)
21 Apr 1981UTC calendar day
Time since launch
6 years, 2 months2,281 days
How it ended
Re-entered (natural decay)
Latitude range
82.0°N to 82.0°SFinal inclination 98.0°
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 98.0°, allowed a re-entry anywhere between 82.0°N and 82.0°S.
Life in orbit
DELTA 1 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 21 Apr 1981
1 entryPart of a fragment group
175 on record
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0182
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0182
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.