CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1989-0304
THORAD DELTA 1 DEB
THORAD DELTA 1 DEB (NORAD 18508) re-entered Earth’s atmosphere on 15 March 1989.
Official dateFragment record
NORAD number
18508
International designator
1974-089EY
Object type
Fragment
Country
United States
Parent launched
15 Nov 1974Vandenberg
Re-entered (UTC)
15 Mar 1989UTC calendar day
Time since launch
14 years, 4 months5,234 days
How it ended
Re-entered (natural decay)
Latitude range
76.6°N to 76.6°SFinal inclination 103.4°
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 103.4°, allowed a re-entry anywhere between 76.6°N and 76.6°S.
Life in orbit
THORAD DELTA 1 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 15 Mar 1989
5 entries
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1989-0304
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1989-0304
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.