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Mars 2M No.522
Spacecraft
Mars 2M No.522, also known as Mars M-69 No.522 and sometimes identified by NASA as Mars 1969B, was a Soviet spacecraft which was lost in a launch failure in 1969. It consisted of an orbiter.
Wikipedia
Launch date
:
April 2, 1969
Mission duration
:
Failed to orbit
Rocket
:
Proton-K/D s/n 233-01