Flight
- Date and time (UTC)
- December 3, 1968, 14:52
- Launch designation
- 1968-107
- Mission
- DS-P1-Yu No. 17
- Flight name
- Kosmos-257
- Vehicle flight ID
- V295-03
- Year
- Launches in 1968
Orbit and payload
- Initial perigee
- 268 km
- Initial apogee
- 445 km
- Inclination
- 70.9°
- Payload mass to orbit
- 0.200 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-257 | 1968-107ANORAD 3578 | Proto-Vozdhusnoy Oborony | Calibration | 200 kg | Reentered (orbital decay) · Mar 5, 1969 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.