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USA-202
USA 202, previously NRO Launch 26 or NROL-26, is a classified spacecraft which is to be operated by the United States National Reconnaissance Office. It is an Advanced Orion ELINT satellite. According to Aviation Week it, "Fundamentally involves America's biggest, most secret and expensive military spacecraft on board the world's largest rocket."〔(【引用サイトリンク】title=NRO Delays Delta IV Heavy Launch )〕 The combined cost of the spacecraft and launch vehicle has been estimated to be over US$2 billion.〔
== Launch ==
USA-202 was launched from Space Launch Complex 37B at the Cape Canaveral Air Force Station, on the third flight of a Delta IV Heavy rocket. The launch was originally scheduled for 2005, but was delayed due to a number of issues, and lift-off took place at 02:47 GMT on 18 January 2009.〔(【引用サイトリンク】title=First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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