SL-12 R/B
| Launched | 24 July 1973 |
| Flight ended | 26 July 1973 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 6755 |
| COSPAR ID | 1973-049B |
| Observing |
Timeline
| 1973 Jul 25 | – | Launch from Baikonur 81/24 |
| 1974 Feb 12 | – | Insertion into orbit around Mars |
| 1974 Feb 28 | – | Spacecraft failure; last contact with spacecraft |