CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1974-0023
DELTA 1 R/B
DELTA 1 R/B (NORAD 5499) re-entered Earth’s atmosphere on 24 January 1974, after 2 years, 3 months in orbit.
Official date
NORAD number
5499
International designator
1971-083C
Object type
Rocket body
Country
United States
Launched
29 Sep 1971Cape Canaveral
Re-entered (UTC)
24 Jan 1974UTC calendar day
Time in orbit
2 years, 3 months848 days
How it ended
Re-entered (natural decay)
Latitude range
33.1°N to 33.1°SFinal inclination 33.1°
Mass
785 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 33.1°, allowed a re-entry anywhere between 33.1°N and 33.1°S.
Life in orbit
2 years, 3 monthsDELTA 1 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 24 Jan 1974
2 entriesFrom the same launch
1971-083
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1974-0023
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1974-0023
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.