Proton-K/DM-2 from Baikonur lofted Cosmos 1838, 1839, and 1840, three Uragan (GLONASS) navigation satellites. A Block DM-2 upper-stage anomaly left them in unusable orbits (partial failure).
- Outcome
- Partial
- Orbit
- MEO
- Medium Earth orbit
- Payload to orbit
- 4.7 T
- Flight
- 13th
- of 110 Proton K/DM-2 flights
- Date and time
- 24 April 1987, 12:42 UTC
- Rocket
- Proton K/DM-2
- Builder
- Khrunichev
- Launch site
- 200/40, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Navigation
- International designator
- 1987-036
- Launches in 1987
- 38th of 114
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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