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(277475) 2005 WK4 : ウィキペディア英語版 | (277475) 2005 WK4
〔(JPL (277475) 2005 WK4 )〕 is a near-Earth asteroid that passed within 8.2 Lunar distances on August 8, 2013.〔(Radar Images of Asteroid 2005 WK4 )〕 It was radar-imaged by the Deep Space Network dish at Goldstone, USA.〔 The asteroid is between 660 and 980 feet (200 and 300 meters) in diameter, and rotated 2.5 times in 6.5 hours.〔 It had been observed by the Arecibo radar in July 2012 (this was not a close approach though), and is also classified as a Potentially Hazardous Object (PHA).〔(2005WK4 - Background )〕 The asteroid was discovered November 27, 2005 by the Siding Spring Survey.〔(【引用サイトリンク】url=http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=277475 )〕〔( Hicks, M.; Buratt, B.; Carcione, A.; Borlase, R. - Broadband Photometry Of The Potentially Asteroid 277475 (2005 WK4) and Corrected 52762 (1998 MT24) Colors. - 2013 )〕 ==References==
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