Kosmos 211

Kosmos 211 (Russian: Космос 211 meaning Cosmos 211), also known as DS-P1-Yu No.13 was a Soviet satellite which was used as a radar calibration target for tests of anti-ballistic missiles. It was built by the Yuzhnoye Design Bureau, and launched in 1968 as part of the Dnepropetrovsk Sputnik programme.[1] It had a mass of 250 kilograms (550 lb).[1]

A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 211 from Site 133/1 at Plesetsk Cosmodrome.[2] The launch occurred at 11:26:25 UTC on 9 April 1968, and resulted in Kosmos 211's successful deployment into a low Earth orbit.[3] Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1968-028A.

Kosmos 211 was operated in an orbit with a perigee of 197 kilometres (122 mi), an apogee of 1,397 kilometres (868 mi), 81.8 degrees of inclination, and an orbital period of 100.81 minutes.[1][4] It remained in orbit until it decayed and reentered the atmosphere on 10 November.[4] It was the twelfth of seventy nine DS-P1-Yu satellites to be launched,[1] and the eleventh of seventy two to successfully reach orbit.[5]

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