Flight
- Date and time (UTC)
- May 19, 1971, 16:22
- Launch designation
- 1971-045
- Mission
- 4M No. 171
- Flight name
- Mars-2
- Vehicle flight ID
- 255-01
- Year
- Launches in 1971
Orbit and payload
- Initial apogee
- 150,000 km
- Payload mass to orbit
- 6.0 t
- Payloads
- 3
- GCAT launch code
- DS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Mars-2 | 1971-045ANORAD 5234 | Institut Kosmicheksiye Issledovaniya | Deep space | 3,440 kg | Left Earth orbit for deep space · May 20, 1971 |
| SA Marsa-2 | 1971-045DNORAD 5739 | Institut Kosmicheksiye Issledovaniya | Deep space | 645 kg | Left for deep space attached to another object · May 22, 1971 |
| PROP-M | 1971-045 | Ministry of General Machine Building | — | — | — |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.