Kosmos 1172, a US-K (Oko) missile early-warning satellite for the Soviet military, replacing Kosmos 1109. Molniya-M/2BL from Plesetsk Site 41/1 placed the craft in a highly elliptical Molniya orbit for infrared detection of ICBM launches.
- Outcome
- Success
- Orbit
- Elliptical
- Elliptical orbit
- Payload to orbit
- 1.6 T (est.)
- Flight
- 110th
- of 272 Molniya-M 2BL flights
- Date and time
- 12 April 1980, 20:17 UTC
- Rocket
- Molniya-M 2BL
- Builder
- Progress RSC
- Launch site
- 41/1, Plesetsk Cosmodrome, Russian Federation
- Payload
- Government/Top Secret
- International designator
- 1980-028
- Launches in 1980
- 28th of 108
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