CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0057
COSMOS 2121
COSMOS 2121 (NORAD 21059) landed on 11 February 1991, after 25 days in orbit.
Official date
NORAD number
21059
International designator
1991-004A
Object type
Spacecraft
Country
USSR
Launched
17 Jan 1991Plesetsk Cosmodrome
Landed (UTC)
11 Feb 1991UTC calendar dayAlso recorded as 10 Feb 1991
Time in orbit
25 days25 days
How it ended
Landed
Latitude range
82.6°N to 82.6°SFinal inclination 82.6°
Mass
2,655 kg
Operator
UNKS RF
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 82.6°, allowed a re-entry anywhere between 82.6°N and 82.6°S.
Life in orbit
25 daysCOSMOS 2121’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 11 Feb 1991
3 entriesFrom the same launch
1991-004
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0057
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0057
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.