CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1978-0184
THORAD DELTA 1 R/B(1)
THORAD DELTA 1 R/B(1) (NORAD 7579) re-entered Earth’s atmosphere on 19 April 1978, after 3 years, 4 months in orbit.
Official date
NORAD number
7579
International designator
1974-101B
Object type
Rocket body
Country
United States
Launched
19 Dec 1974Cape Canaveral
Re-entered (UTC)
19 Apr 1978UTC calendar day
Time in orbit
3 years, 4 months1,217 days
How it ended
Re-entered (natural decay)
Latitude range
27.0°N to 27.0°SFinal inclination 27.0°
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 27.0°, allowed a re-entry anywhere between 27.0°N and 27.0°S.
Life in orbit
3 years, 4 monthsTHORAD DELTA 1 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 19 Apr 1978
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1978-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1978-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.