CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0161
DELTA 1 DEB
DELTA 1 DEB (NORAD 9550) re-entered Earth’s atmosphere on 14 April 1979.
Official dateFragment record
NORAD number
9550
International designator
1975-004FN
Object type
Fragment
Country
United States
Parent launched
22 Jan 1975Vandenberg
Re-entered (UTC)
14 Apr 1979UTC calendar day
Time since launch
4 years, 2 months1,543 days
How it ended
Re-entered (natural decay)
Latitude range
82.8°N to 82.8°SFinal inclination 97.2°
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 97.2°, allowed a re-entry anywhere between 82.8°N and 82.8°S.
Life in orbit
DELTA 1 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 14 Apr 1979
6 entriesPart of a fragment group
175 on record
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0161
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0161
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.