2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Launches
  3. 1975
  4. 1975-020
// orbital launch

Zenit-2M

Voskhod 11A57 launch from Plesetsk (Soviet Union) on March 26, 1975, carrying 2 payloads. GCAT records the launch as a success.

March 26, 1975 · 08:50 UTCLaunch 1975-020Launch no. 1,666 in the log
SpaceportPlesetskpad LC41/1
OutcomeSuccess
Launch agencyRVSNSoviet Union

Flight

Date and time (UTC)
March 26, 1975, 08:50
Launch designation
1975-020
Mission
Zenit-2M
Flight name
Kosmos-721
Vehicle flight ID
76041 -199

Orbit and payload

Initial apogee
283 km
Payload mass to orbit
6.0 t
Payloads
2
GCAT launch code
OS

Payloads

PayloadDesignationOwnerMission typeMassFate
Kosmos-7211975-020ANORAD 7705Main Space Forces DirectorateOptical imaging2,200 kgLanded · Apr 7, 1975
Kapsula Kosmosa-7211975-020FNORAD 7721Central Specialized Design BureauSpace science630 kgReentered (orbital decay) · Apr 10, 1975

Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.