Kosmos 135 ( Russian: Космос 135 meaning Cosmos 135), also known as DS-U2-MP No.1, was a Soviet satellite which was launched in 1966 as part of the Dnepropetrovsk Sputnik programme. It was a 280-kilogram (620 lb) spacecraft, which was built by the  Yuzhnoye Design Bureau, and was used to investigate micrometeoroids and particles of dust in space. 
Kosmos-2I 63SM carrier rocket was used to launch Kosmos 135 into low Earth orbit. The launch took place from Site 86/1 at Kapustin Yar. The launch occurred at 20:37:59 GMT on 12 December 1966, and resulted in the successful insertion of the satellite into orbit.  Upon reaching orbit, the satellite was assigned its  Kosmos designation, and received the International Designator 1966-112A. The  North American Aerospace Defense Command assigned it the catalogue number 02612.
Kosmos 135 was the first of two
DS-U2-MP satellites to be launched, the other being Kosmos 163.  It was operated in an orbit with a  perigee of 251 kilometres (156 mi), an apogee of 604 kilometres (375 mi), 48.4 degrees of inclination, and an orbital period of 93.12 minutes. It  decayed from its orbit and reentered the atmosphere on 12 April 1967. 
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