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2003 BR47
, also written 2003 BR47, is an Apollo asteroid but also an Earth crosser and a Mars crosser. It was discovered on January 31, 2003 by the LINEAR program. As of March 19, 2013 its orbit is based on 170 observations spanning a data-arc of 939 days. It is included in the Minor Planet Center list of Potentially Hazardous Asteroids (PHAs) as it comes to within 0.05 AU of Earth periodically. == See also ==
* 99942 Apophis
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「2003 BR47」の詳細全文を読む
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