CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1969-0051
OPS 3890
OPS 3890 (NORAD 3672) came down while still attached to its host on 24 February 1969, after 19 days in orbit.
Official date
NORAD number
3672
International designator
1969-010A
Object type
Spacecraft
Country
United States
Launched
5 Feb 1969Vandenberg
Re-entered (UTC)
24 Feb 1969UTC calendar day
Time in orbit
19 days19 days
How it ended
Came down attached to its host
Latitude range
81.6°N to 81.6°SFinal inclination 81.6°
Mass
345 kg
Operator
NRO / CIA
Built by
LMSC
Bus
CORONA KH-4B
Programme
CORONA CR
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 81.6°, allowed a re-entry anywhere between 81.6°N and 81.6°S.
Life in orbit
19 daysOPS 3890’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 24 Feb 1969
1 entryFrom the same launch
1969-010
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1969-0051
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1969-0051
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.