Launch data:
| Designation | 12927 / 81106A |
| Launch date | 30 Oct 1981 - 06:04 UT |
| Launch site | B, LC-200/40 |
| Launch vehicle |
Proton-K/D-1 8K82K (#311-01/11S824M) |
| Mission | Venus lander |
| Satellite type | 4V-1M N° 760 |
| Heliocentric orbit |
| Perihelion / Aphelion | 0.70 x 0.99 A.U. |
| Eccentricity | 0.17 |
| Inclination | 2.3? deg |
| Period | 285 days |
|
|