Kosmos 403 (Zenit-2M #18, Gektor), a Soviet medium-resolution film-return photoreconnaissance satellite. Voskhod from Plesetsk LC-43/3 placed it in LEO for optical imaging; recovered after about two weeks on 14 April 1971.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 5.4 T (est.)
- Flight
- 150th
- of 299 Voskhod flights
- Date and time
- 2 April 1971, 08:20 UTC
- Rocket
- Voskhod
- Builder
- RKK Energia
- Launch site
- 43/3 (43L), Plesetsk Cosmodrome, Russian Federation
- Payload
- Government/Top Secret
- International designator
- 1971-026
- Launches in 1971
- 29th of 133
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