CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1990-0517
COSMOS 2104
COSMOS 2104 (NORAD 20936) landed on 4 December 1990, after 18 days in orbit.
Official date
NORAD number
20936
International designator
1990-098A
Object type
Spacecraft
Country
USSR
Launched
16 Nov 1990Plesetsk Cosmodrome
Landed (UTC)
4 Dec 1990UTC calendar day
Time in orbit
18 days18 days
How it ended
Landed
Latitude range
62.8°N to 62.8°SFinal inclination 62.8°
Mass
2,655 kg
Operator
UNKS
Built by
TsSKB
Bus
Oblik
Programme
Oblik
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 62.8°, allowed a re-entry anywhere between 62.8°N and 62.8°S.
Life in orbit
18 daysCOSMOS 2104’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 4 Dec 1990
3 entriesFrom the same launch
1990-098
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1990-0517
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1990-0517
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.