Launch data:
| Designation | 11020 / 78084A |
| Launch date | 09 Sep 1978 - 03:25:39 UT |
| Launch site | B, LC-81/23 |
| Launch vehicle |
Proton-K/D-1 8K82K (#296-01/11S824M) |
| Mission | Venus lander |
| Satellite type | 4V-1 N° 360 |
| Heliocentric (Solar) orbit |
| Perihelion / Aphelion | 0.69 x 1.01 A.U. |
| Eccentricity | 0.19 |
| Inclination | 2.3? deg |
| Period | 284 days |
| Heliocentric orbit |
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