CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1966-0450
CIS UNKNOWN 2
CIS UNKNOWN 2 (NORAD 2536) re-entered Earth’s atmosphere on 17 November 1966, after 15 days in orbit.
Official date
NORAD number
2536
International designator
1966-101A
Object type
Spacecraft
Country
USSR
Launched
2 Nov 1966Baikonur Cosmodrome
Re-entered (UTC)
17 Nov 1966UTC calendar dayAlso recorded as 29 Nov 1966
Time in orbit
15 days15 days
How it ended
Re-entered (natural decay)
Latitude range
49.7°N to 49.7°SFinal inclination 49.7°
Mass
5,000 kg
Operator
RVSN
Built by
Southern SDB
Bus
8S692
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 49.7°, allowed a re-entry anywhere between 49.7°N and 49.7°S.
Life in orbit
15 daysAlso ended on 17 Nov 1966
3 entriesFrom the same launch
1966-101
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1966-0450
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1966-0450
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.