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PION 4
Launch Details
| Launched | 17 July 1989 |
| Flight ended | 18 September 1989 |
| Status | Decayed |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 20161 |
| COSPAR ID | 1989-055D |
| Observing |
Launched alongside
RESURS F-3 SL-4 R/B PION 3 RESURS F-3 DEB RESURS F-3 DEB RESURS F-3 DEB RESURS F-3 DEB