Proton-K/DM from Baikonur Site 200/40 launched Ekran 4 (Ekran 17L), a Soviet geosynchronous direct-broadcast television satellite delivering Central Television programming to Siberia and the Far North.
- Outcome
- Success
- Orbit
- Direct-GEO
- Geostationary orbit
- Payload to orbit
- 2.1 T
- Flight
- 17th
- of 66 Proton-K/DM flights
- Date and time
- 3 October 1979, 17:12 UTC
- Rocket
- Proton-K/DM
- Builder
- Khrunichev
- Launch site
- 200/40, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Communications
- International designator
- 1979-087
- Launches in 1979
- 90th of 110
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