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Launch SuccessfulSoviet Space Program
Soyuz U: Yantar-4KS1M 1
The Neman or Yantar-4KS1M satellites were improved versions of the Terilen elctro-optical reconnaissance satellites. They were transmitting the data via Potok (Geizer) relay satellites.
Wednesday, 10 July 1991
Mission Data
🇷🇺Soviet Space ProgramEst. 1931
Launch VehicleSoyuz U
Vehicle FamilySoyuz
Vehicle Record694 of 714 launches (97.2%)
Provider TypeGovernment
Agency Record2288 successes / 168 failures (93%)
Success Streak17 consecutive
Mission TypeGovernment/Top Secret
Target OrbitLow Earth Orbit
Launch Pad31/6
Location🇰🇿 Baikonur Cosmodrome, Republic of Kazakhstan KAZ
Orbital Launches This Year#51
Agency Launches This Year#36
Launches From This Pad430
Launches From This Site1,565
Status Note
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Launch Site
31/6 · 45.9960°N 63.5640°E
Launch data from Launch Library 2 by The Space Devs.