Kosmos 1646, a US-P (EORSAT #21) passive electronic ocean-reconnaissance satellite, launched on a Tsiklon-2 from Baikonur. It tracked naval vessels by intercepting their radio and radar emissions for the Soviet Navy.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 3.3 T
- Flight
- 67th
- of 105 Tsiklon-2 flights
- Date and time
- 18 April 1985, 21:40 UTC
- Rocket
- Tsiklon-2
- Builder
- Yuzhmash
- Launch site
- 90, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Government/Top Secret
- International designator
- 1985-030
- Launches in 1985
- 31st of 125
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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