CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1973-0305
COSMOS 561
COSMOS 561 (NORAD 6657) landed on 6 June 1973, after 12 days in orbit.
Official date
NORAD number
6657
International designator
1973-033A
Object type
Spacecraft
Country
USSR
Launched
25 May 1973Plesetsk Cosmodrome
Landed (UTC)
6 Jun 1973UTC calendar day
Time in orbit
12 days12 days
How it ended
Landed
Latitude range
65.4°N to 65.4°SFinal inclination 65.4°
Mass
2,200 kg
Operator
GUKOS RVSN
Built by
TsKBEM Fil. 3
Bus
Zenit-2M
Programme
Zenit-2M
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 65.4°, allowed a re-entry anywhere between 65.4°N and 65.4°S.
Life in orbit
12 daysAlso ended on 6 Jun 1973
3 entriesFrom the same launch
1973-033
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1973-0305
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1973-0305
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.