Prognoz 4 (SO-M 504), a Soviet solar and magnetospheric research satellite studying solar activity’s effects on the interplanetary medium and Earth’s magnetosphere. Molniya-M/Blok-SO-L from Baikonur Site 31/6 placed the ~905 kg craft into a highly elliptical ~634×199,000 km orbit on 22 December 1975.
- Outcome
- Success
- Orbit
- Elliptical
- Elliptical orbit
- Payload to orbit
- 1.2 T
- Flight
- 69th
- of 272 Molniya-M 2BL flights
- Date and time
- 22 December 1975, 02:08 UTC
- Rocket
- Molniya-M 2BL
- Builder
- Progress RSC
- Launch site
- 31/6, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Heliophysics
- International designator
- 1975-122
- Launches in 1975
- 129th of 132
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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