Kosmos 303
Introduction '''Kosmos 303''' ( meaning ''Cosmos 303''), known before launch as '''DS-P1-Yu No.28''', was a Soviet satellite which was launched in 1969 as part of the Dnepropetrovsk Sputnik programme. It was a  spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.
Launch Kosmos 303 was launched from Site 133/1 at the Plesetsk Cosmodrome, atop a Kosmos-2I 63SM carrier rocket. The launch occurred on 18 October 1969 at 10:00:03 UTC, and resulted in the successful deployment of Kosmos 303 into low Earth orbit. Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1969-090A.Kosmos 303 was operated in an orbit with a perigee of , an apogee of , 71 degrees of inclination, and an orbital period of 91.4 minutes. It remained in orbit until it decayed and reentered the atmosphere on 23 January 1970.It was the twenty-fifth of seventy nine DS-P1-Yu satellites to be launched, and the twenty-third of seventy two to successfully reach orbit.
See also * 1969 in spaceflight
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