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Launch FailureSoviet Space Program
Proton: Mars-2d
Mars orbiter and lander
Monday, 10 May 1971
Mission Data
🇷🇺Soviet Space ProgramEst. 1931
Launch VehicleProton / UR-500 K/D
Vehicle FamilyProton / UR-500
Vehicle Record24 of 39 launches (61.5%)
Provider TypeGovernment
Agency Record2288 successes / 168 failures (93%)
Success Streak17 consecutive
Mission TypeRobotic Exploration
Target OrbitMars Orbit
Launch Pad81/23 (81L)
Location🇰🇿 Baikonur Cosmodrome, Republic of Kazakhstan KAZ
Orbital Launches This Year#47
Agency Launches This Year#29
Launches From This Pad104
Launches From This Site1,565
Status Note
Either the launch vehicle did not reach orbit, or the payload(s) failed to separate.
About Proton / UR-500 K/D
This four stage version of the Proton was originally designed to send manned circumlunar spacecraft into translunar trajectory.
Launch Site
81/23 (81L) · 46.0740°N 62.9780°E
Launch data from Launch Library 2 by The Space Devs.