Flight
- Date and time (UTC)
- May 21, 1975, 06:59
- Launch designation
- 1975-041
- Mission
- Zenit-2M
- Flight name
- Kosmos-731
- Vehicle flight ID
- 78031 -195
- Year
- Launches in 1975
Orbit and payload
- Initial apogee
- 462 km
- Payload mass to orbit
- 6.0 t
- Payloads
- 2
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-731 | 1975-041ANORAD 7810 | Main Space Forces Directorate | Optical imaging | 2,200 kg | Landed · Jun 2, 1975 |
| Kapsula Kosmosa-731 | 1975-041HNORAD 7885 | Central Specialized Design Bureau | Astronomy | 630 kg | Reentered (orbital decay) · Jun 19, 1975 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.