CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0218
COSMOS 2138
COSMOS 2138 (NORAD 21203) landed on 24 May 1991, after 1 month in orbit.
Official date
NORAD number
21203
International designator
1991-023A
Object type
Spacecraft
Country
USSR
Launched
26 Mar 1991Plesetsk Cosmodrome
Landed (UTC)
24 May 1991UTC calendar day
Time in orbit
1 month59 days
How it ended
Landed
Latitude range
67.1°N to 67.1°SFinal inclination 67.1°
Mass
2,886 kg
Operator
UNKS RF
Built by
TsSKB
Bus
Yantar'-4K2
Programme
Kobal't
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 67.1°, allowed a re-entry anywhere between 67.1°N and 67.1°S.
Life in orbit
1 monthCOSMOS 2138’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1991-023
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0218
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0218
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.