CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0522
COSMOS 966
COSMOS 966 (NORAD 10510) landed on 24 December 1977, after 12 days in orbit.
Official date
NORAD number
10510
International designator
1977-115A
Object type
Spacecraft
Country
USSR
Launched
12 Dec 1977Baikonur Cosmodrome
Landed (UTC)
24 Dec 1977UTC calendar day
Time in orbit
12 days12 days
How it ended
Landed
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
Mass
2,200 kg
Operator
GUKOS RVSN
Built by
TsSKB
Bus
Zenit-2M
Programme
Zenit-2M
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 65.0°, allowed a re-entry anywhere between 65.0°N and 65.0°S.
Life in orbit
12 daysFrom the same launch
1977-115
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0522
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0522
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.