CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1964-0003
THOR AGENA D
THOR AGENA D (NORAD 718) came down while still attached to its host on 8 January 1964, after 18 days in orbit.
Official date
NORAD number
718
International designator
1963-055A
Object type
Spacecraft
Country
United States
Launched
21 Dec 1963Vandenberg
Re-entered (UTC)
8 Jan 1964UTC calendar day
Time in orbit
18 days18 days
How it ended
Came down attached to its host
Latitude range
64.8°N to 64.8°SFinal inclination 64.8°
Mass
210 kg
Operator
NRO / CIA
Built by
LMSC
Bus
CORONA KH-4
Programme
CORONA M
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 64.8°, allowed a re-entry anywhere between 64.8°N and 64.8°S.
Life in orbit
18 daysTHOR AGENA D’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1963-055
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1964-0003
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1964-0003
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.