Molniya-M (Blok-2BL) from Plesetsk placed Kosmos 1851, a US-K (Oko) missile early-warning satellite, into a highly elliptical Molniya orbit to watch for U.S. ICBM launches with infrared sensors.
- Outcome
- Success
- Orbit
- Elliptical
- Elliptical orbit
- Payload to orbit
- 1.6 T (est.)
- Flight
- 199th
- of 272 Molniya-M 2BL flights
- Date and time
- 12 June 1987, 07:40 UTC
- Rocket
- Molniya-M 2BL
- Builder
- Progress RSC
- Launch site
- 43/4 (43R), Plesetsk Cosmodrome, Russian Federation
- Payload
- Government/Top Secret
- International designator
- 1987-050
- Launches in 1987
- 53rd of 114
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