CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1974-0219
THOR AGENA B R/B
THOR AGENA B R/B (NORAD 878) re-entered Earth’s atmosphere on 13 August 1974, after 9 years, 11 months in orbit.
Official date
NORAD number
878
International designator
1964-052B
Object type
Rocket body
Country
United States
Launched
28 Aug 1964Vandenberg
Re-entered (UTC)
13 Aug 1974UTC calendar day
Time in orbit
9 years, 11 months3,637 days
How it ended
Re-entered (natural decay)
Latitude range
81.3°N to 81.3°SFinal inclination 98.7°
Mass
600 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 98.7°, allowed a re-entry anywhere between 81.3°N and 81.3°S.
Life in orbit
9 years, 11 monthsTHOR AGENA B R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 13 Aug 1974
2 entriesFrom the same launch
1964-052
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1974-0219
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1974-0219
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.