CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1975-0140
Kapsula Kosmosa-728
Nauka 15KS No. 1L
Kapsula Kosmosa-728 (NORAD 7779) re-entered Earth’s atmosphere on 16 May 1975, after 28 days in orbit.
Official dateIdentified from the historical record
NORAD number
7779
International designator
1975-031G
Object type
Spacecraft
Official listing
COSMOS 728 DEBListed as a fragment
Country
USSR
Launched
18 Apr 1975Plesetsk Cosmodrome
Re-entered (UTC)
16 May 1975UTC calendar day
Time in orbit
28 days28 days
How it ended
Re-entered (natural decay)
Latitude range
72.8°N to 72.8°SFinal inclination 72.8°
Mass
630 kg
Operator
TsSKB
Built by
TsSKB
Bus
Nauka
Programme
Nauka 15KS
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
28 daysFrom the same launch
1975-031
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1975-0140
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1975-0140
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.