CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2024-0437
COSMOS 1633
COSMOS 1633 (NORAD 15592) re-entered Earth’s atmosphere on 5 April 2024, after 39 years, 1 month in orbit.
Official date
NORAD number
15592
International designator
1985-020A
Object type
Spacecraft
Country
USSR
Launched
5 Mar 1985Plesetsk Cosmodrome
Re-entered (UTC)
5 Apr 2024UTC calendar day
Time in orbit
39 years, 1 month14,276 days
How it ended
Re-entered (natural decay)
Latitude range
82.5°N to 82.5°SFinal inclination 82.5°
Mass
1,750 kg
Operator
GRU
Built by
Southern SDB
Bus
Tselina-D
Programme
Tselina-D
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 82.5°, allowed a re-entry anywhere between 82.5°N and 82.5°S.
Life in orbit
39 years, 1 monthCOSMOS 1633’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 5 Apr 2024
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2024-0437
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2024-0437
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.