CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1974-0139
THORAD DELTA 1 R/B(1)
THORAD DELTA 1 R/B(1) (NORAD 7251) re-entered Earth’s atmosphere on 25 May 1974, after 1 month in orbit.
Official date
NORAD number
7251
International designator
1974-022B
Object type
Rocket body
Country
United States
Launched
13 Apr 1974Cape Canaveral
Re-entered (UTC)
25 May 1974UTC calendar day
Time in orbit
1 month42 days
How it ended
Re-entered (natural decay)
Latitude range
28.6°N to 28.6°SFinal inclination 28.6°
Mass
845 kg
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 28.6°, allowed a re-entry anywhere between 28.6°N and 28.6°S.
Life in orbit
1 monthTHORAD DELTA 1 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 25 May 1974
2 entriesFrom the same launch
1974-022
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1974-0139
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1974-0139
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.