CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0428
DELTA 1 DEB
DELTA 1 DEB (NORAD 9546) re-entered Earth’s atmosphere on 7 October 1977.
Official dateFragment record
NORAD number
9546
International designator
1975-004FJ
Object type
Fragment
Country
United States
Parent launched
22 Jan 1975Vandenberg
Re-entered (UTC)
7 Oct 1977UTC calendar day
Time since launch
2 years, 8 months989 days
How it ended
Re-entered (natural decay)
Latitude range
81.9°N to 81.9°SFinal inclination 98.1°
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 98.1°, allowed a re-entry anywhere between 81.9°N and 81.9°S.
Life in orbit
DELTA 1 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Part of a fragment group
175 on record
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0428
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0428
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.