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Kosmos 839 ((ロシア語:Космос 839) meaning ''Cosmos 839'') was a satellite which was used as a target for tests of anti-satellite weapons. It was launched by the Soviet Union in 1976 as part of the Dnepropetrovsk Sputnik programme, and used as a target for Kosmos 843 as part of the Istrebitel Sputnik programme. It was launched aboard a Kosmos-3M carrier rocket, from Site 132/1 at the Plesetsk Cosmodrome. The launch occurred at 21:08 UTC on 8 July 1976. Kosmos 839 was placed into a low Earth orbit with a perigee of , an apogee of , 65.9 degrees of inclination, and an orbital period of 115.6 minutes.〔 It was successfully intercepted by Kosmos 843 on 21 July. As of 2009, debris is still in orbit.〔 Kosmos 839 was the third of ten Lira satellites to be launched,〔 of which all but the first were successful. Lira was derived from the earlier DS-P1-M satellite, which it replaced. ==See also== *1976 in spaceflight 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kosmos 839」の詳細全文を読む スポンサード リンク
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