CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1968-0299
OPS 8411
OPS 8411 (NORAD 1447) came down while still attached to its host on 18 December 1968, after 3 years, 5 months in orbit.
Official date
NORAD number
1447
International designator
1965-055A
Object type
Spacecraft
Country
United States
Launched
17 Jul 1965Vandenberg
Re-entered (UTC)
18 Dec 1968UTC calendar day
Time in orbit
3 years, 5 months1,250 days
How it ended
Came down attached to its host
Latitude range
70.2°N to 70.2°SFinal inclination 70.2°
Mass
600 kg
Operator
NRO / SAFSP
Built by
LMSC / Cutler-Hammer/AIL
Bus
SAMOS F-2
Programme
SAMOS F-2
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 70.2°, allowed a re-entry anywhere between 70.2°N and 70.2°S.
Life in orbit
3 years, 5 monthsOPS 8411’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 18 Dec 1968
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1968-0299
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1968-0299
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.