Kosmos 165

Kosmos 165 (Космос 165 meaning Cosmos 165), also known as DS-P1-Yu No.11 was a radar calibration target satellite which was used by the Soviet Union for tests of anti-ballistic missiles. It was a 400 kg spacecraft, which was built by the Yuzhnoye Design Office, and launched in 1967 as part of the Dnepropetrovsk Sputnik programme.

Kosmos 165 was launched using a Kosmos-2I 63SM carrier rocket, which flew from Site 133/3 at Plesetsk Cosmodrome. The launch occurred at 18:06:00 GMT on 12 June 1967.

Kosmos 165 separated from its carrier rocket into a low Earth orbit with a perigee of 198 km, an apogee of 1515 km, an inclination of 81.9°, and an orbital period of 102.1 minutes. It decayed from orbit on 15 January 1968. Kosmos 165 was the eighth of seventy nine DS-P1-Yu satellites to be launched, and the seventh of seventy two to successfully reach orbit.