Venera 11 (4V-1 #3), a Soviet Venus flyby-and-lander mission. Proton-K/D-1 from Baikonur sent the craft on a heliocentric path; the lander soft-landed 25 Dec 1978 near Phoebe Regio (~95 min surface data), while the bus relayed and studied gamma-ray bursts; lander camera lens caps failed to open.
- Outcome
- Success
- Orbit
- Venus
- Payload to orbit
- 6.1 T (est.)
- Flight
- 3rd
- of 12 Proton-K/D-1 flights
- Date and time
- 9 September 1978, 03:25 UTC
- Rocket
- Proton-K/D-1
- Builder
- Khrunichev
- Launch site
- 81/23 (81L), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Robotic Exploration
- International designator
- 1978-084
- Launches in 1978
- 87th of 128
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