CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1975-0126
COSMOS 686
COSMOS 686 (NORAD 7447) re-entered Earth’s atmosphere on 1 May 1975, after 7 months in orbit.
Official date
NORAD number
7447
International designator
1974-074A
Object type
Spacecraft
Country
USSR
Launched
26 Sep 1974Plesetsk Cosmodrome
Re-entered (UTC)
1 May 1975UTC calendar day
Time in orbit
7 months217 days
How it ended
Re-entered (natural decay)
Latitude range
71.0°N to 71.0°SFinal inclination 71.0°
Mass
200 kg
Operator
PVO
Built by
Southern SDB
Bus
DS-P1
Programme
DS-P1-Yu A
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 71.0°, allowed a re-entry anywhere between 71.0°N and 71.0°S.
Life in orbit
7 monthsCOSMOS 686’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 1 May 1975
1 entryFrom the same launch
1974-074
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1975-0126
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1975-0126
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.