Luna 11
Luna 11 was an unmanned space mission of the Luna program, also called Lunik 11.
Luna 11 was launched towards the Moon from an earth-orbiting platform and entered lunar orbit on August 28, 1966. The objectives of the mission included the study of:
A total of 137 radio transmissions and 277 orbits of the Moon were completed before the batteries failed on October 1, 1966.