CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1966-0478
OPS 1866
OPS 1866 (NORAD 2537) came down while still attached to its host on 29 November 1966, after 21 days in orbit.
Official date
NORAD number
2537
International designator
1966-102A
Object type
Spacecraft
Country
United States
Launched
8 Nov 1966Vandenberg
Re-entered (UTC)
29 Nov 1966UTC calendar day
Time in orbit
21 days21 days
How it ended
Came down attached to its host
Latitude range
79.9°N to 79.9°SFinal inclination 100.1°
Mass
210 kg
Operator
NRO / CIA
Built by
LMSC
Bus
CORONA KH-4A
Programme
CORONA J-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 100.1°, allowed a re-entry anywhere between 79.9°N and 79.9°S.
Life in orbit
21 daysOPS 1866’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 29 Nov 1966
6 entries
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1966-0478
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1966-0478
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.