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Kosmos 138
Kosmos 138 ((ロシア語:''Космос 138'') meaning ''Cosmos 138'') or Zenit-2 No.43 was a Soviet optical film-return reconnaissance satellite launched in 1967. A Zenit-2 spacecraft, Kosmos 138 was the forty-fifth of eighty-one such satellites to be launched and had a mass of .〔 Kosmos 138 was launched by a Vostok-2 rocket, serial number N15001-05, flying from Site 41/1 at the Plesetsk Cosmodrome. The launch took place at 12:39:59 UTC on 19 January 1967,〔 and following its arrival in orbit the spacecraft received its Kosmos designation; along with the International Designator 1967-004A and the Satellite Catalog Number 2646.〔 The satellite reached a slightly lower orbit than had been planned, but was still able to complete its mission.〔 Kosmos 138 was operated in a low Earth orbit; at an epoch of 21 January 1967 it had a perigee of , an apogee of inclination of 64.5 degrees and an orbital period of 89.16 minutes.〔 After 8 days in orbit, Kosmos 138 was deorbited, with its return capsule descending under parachute and landing at 06:14 UTC on 27 January 1967. ==References==
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