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USA-241, also known as SBIRS-GEO 2, is an American military satellite and part of the Space-Based Infrared System. It was launched on March 19, 2013 from Cape Canaveral atop an Atlas V rocket. The SBIRS satellites are a replacement for the Defense Support Program early warning system. They are intended to detect ICBM launches. SBIRS-GEO 2 was manufactured by Lockheed Martin and is built upon the A2100M satellite bus. In October 2013, the satellite was incorporated into the United States early warning network.〔("Air Force welcomes new craft into early warning network", Spaceflight Now, 26 November 2013. )〕 ==External links== *(SBIRS-GEO 1, 2, 3, 4, 5, 6 at Gunter's Space Page ) 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「USA-241」の詳細全文を読む スポンサード リンク
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