CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1975-0123
COSMOS 728
COSMOS 728 (NORAD 7745) landed on 29 April 1975, after 11 days in orbit.
Official date
NORAD number
7745
International designator
1975-031A
Object type
Spacecraft
Country
USSR
Launched
18 Apr 1975Plesetsk Cosmodrome
Landed (UTC)
29 Apr 1975UTC calendar day
Time in orbit
11 days11 days
How it ended
Landed
Latitude range
72.8°N to 72.8°SFinal inclination 72.8°
Mass
2,200 kg
Operator
GUKOS RVSN
Built by
TsSKB
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 72.8°, allowed a re-entry anywhere between 72.8°N and 72.8°S.
Life in orbit
11 daysAlso ended on 29 Apr 1975
2 entriesFrom the same launch
1975-031
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1975-0123
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1975-0123
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.