SL-12 R/B
| Launched | 13 June 1975 | 
| Flight ended | 14 June 1975 | 
| Status | Decayed | 
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) | 
| Owner | Commonwealth of Independent States (former USSR) | 
| NORAD ID | 7950 | 
| COSPAR ID | 1975-054B | 
| Observing | 
Timeline
| 1975 Jun 14 | – | Launch from Site 81/24 at the Baikonur Cosmodrome | 
| 1975 Oct 23 | – | Landing craft separated from orbiter | 
| 1975 Oct 23 | – | Orbiter enter orbit around Venus | 
| 1975 Oct 25 | – | Lander descended into Venus's atmosphere | 
| 1975 Oct 25 | – | Lander made soft landing on Venus's surface | 
| 1975 Oct 25 | – | Lander returned images from the surface of Venus | 
| 1975 Oct 25 | – | Lander mission ended, 65 minutes after landing | 
| 1976 Jun 1 | – | Last contact with orbiter |