Luna 12 (E-6LF series) was an uncrewed space mission of the Luna program, also called Lunik 12. Luna 12 was launched towards the Moon onboard a Molniya-M and achieved lunar orbit on October 25, 1966. The spacecraft was equipped with a television system that obtained and transmitted photographs of the lunar surface. The photographs contained 1100 scan lines with a maximum resolution of 14.9-19.8 m. Pictures of the lunar surface were returned on October 27, 1966. The number of photographs is not known. Radio transmissions from Luna 12 ceased on January 19, 1967, after 602 lunar orbits and 302 radio transmissions. Luna 12 was launched to complete the mission that Luna 11 had failed to accomplish—take high-resolution photos of the Moon's surface from lunar orbit.

Wikipedia: https://en.wikipedia.org/wiki/Luna_12. Related NASA reference: https://nssdc.gsfc.nasa.gov/planetary/chronology.html#1966. Description adapted from Wikipedia contributors (CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/).