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USA-84
USA-84, also known as GPS IIA-6, GPS II-15 and GPS SVN-27, is an American navigation satellite which forms part of the Global Positioning System. It was the sixth of nineteen Block IIA GPS satellites to be launched. USA-84 was launched at 08:57:00 UTC on 9 September 1992, atop a Delta II carrier rocket, flight number D214, flying in the 7925-9.5 configuration. The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station, and placed USA-84 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor. On 11 October 1992, USA-84 was in an orbit with a perigee of , an apogee of , a period of 717.98 minutes, and 54.7 degrees of inclination to the equator. It had PRN 27, and operated in slot 4 of plane A of the GPS constellation. The satellite has a mass of . It had a design life of 7.5 years,〔 but was in service for twenty years, until its retirement in October 2012. ==References==
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-84」の詳細全文を読む
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