Kosmos 143 (Russian: Космос 143 meaning Cosmos 143) or Zenit-2 No.45 was a Soviet, first generation, low resolution, optical film-return reconnaissance satellite launched in 1967.

A Zenit-2 spacecraft, Kosmos 143 was the forty-sixth of eighty-one such satellites to be launched[3][4] and had a mass of 1,730 kilograms (3,810 lb).

[1] Kosmos 143 was launched by a Vostok-2 rocket, serial number U15001-03,[5] flying from Site 1/5 at the Baikonur Cosmodrome.

[1] Kosmos 143 was operated in a low Earth orbit, at an epoch of 27 February 1967, it had a perigee of 204 kilometres (127 mi), an apogee of 297 kilometres (185 mi), an inclination of 65.0°, and an orbital period of 89.5 minutes.

[2] After eight days in orbit, Kosmos 143 was deorbited, with its return capsule descending under parachute, landing at 05:46 GMT on 7 March 1967, and recovered by Soviet force.