Flight
- Date and time (UTC)
- June 24, 1971, 07:59
- Launch designation
- 1971-057
- Mission
- Zenit-2M
- Flight name
- Kosmos-428
- Vehicle flight ID
- 7705711-123
- Year
- Launches in 1971
Orbit and payload
- Initial apogee
- 257 km
- Payload mass to orbit
- 6.0 t
- Payloads
- 2
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-428 | 1971-057ANORAD 5305 | Main Space Forces Directorate | Optical imaging | 2,200 kg | Landed · Jul 6, 1971 |
| Kapsula Kosmosa-428 | 1971-057GNORAD 5315 | TsKBEM Filial No. 3 | Astronomy | 630 kg | Reentered (orbital decay) · Jul 13, 1971 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.