Flight
- Date and time (UTC)
- March 6, 1973, 09:20
- Launch designation
- 1973-012
- Mission
- Zenit-4M
- Flight name
- Kosmos-551
- Vehicle flight ID
- 7702423-249
- Year
- Launches in 1973
Orbit and payload
- Initial apogee
- 397 km
- Payload mass to orbit
- 6.0 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-551 | 1973-012ANORAD 6378 | Main Space Forces Directorate | Optical imaging | 2,200 kg | Landed · Mar 20, 1973 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.