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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク USA-85 ： ウィキペディア英語版 USA-85 USA-85, also known as GPS IIA-7, GPS II-16 and GPS SVN-32, was an American navigation satellite which formed part of the Global Positioning System. It was the seventh of nineteen Block IIA GPS satellites to be launched. USA-85 was launched at 23:54:00 UTC on 22 November 1992, atop a Delta II carrier rocket, flight number D216, 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-85 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor. On 23 December 1992, USA-85 was in an orbit with a perigee of , an apogee of , a period of 717.96 minutes, and 54.8 degrees of inclination to the equator. It was intended to broadcast signal PRN 32, but this was changed to PRN 01 on 28 January 1993 after it was discovered that receivers could not track the PRN 32 signal. The spacecraft was operated in slot 4 of plane F of the GPS constellation, and had a mass of . It had a design life of 7.5 years,〔 and was retired from service on 17 March 2008. It is unclear whether it has been retained as a backup satellite. ==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-85」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.