Spacecraft information: MOLNIYA 1-66
| Launched | 27 October 1985 |
| Flight ended | 1 August 2002 |
| Status | Decayed |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16220 |
| COSPAR ID | 1985-103A |
| Observing |