CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1988-0809
COSMOS 1735
COSMOS 1735 (NORAD 16620) re-entered Earth’s atmosphere on 17 November 1988, after 2 years, 8 months in orbit.
Official date
NORAD number
16620
International designator
1986-021A
Object type
Spacecraft
Country
USSR
Launched
27 Feb 1986Baikonur Cosmodrome
Re-entered (UTC)
17 Nov 1988UTC calendar day
Time in orbit
2 years, 8 months994 days
How it ended
Re-entered (natural decay)
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
Mass
3,300 kg
Operator
Soviet Navy
Built by
Arsenal / Kometa
Bus
US-P
Programme
US-PM
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 65.0°, allowed a re-entry anywhere between 65.0°N and 65.0°S.
Life in orbit
2 years, 8 monthsCOSMOS 1735’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 17 Nov 1988
1 entryFrom the same launch
1986-021
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1988-0809
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1988-0809
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.