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(332446) 2008 AF4
is an asteroid which was listed on the Sentry Risk Table in January 2008 with a Torino Scale rating of 1.〔 The asteroid showed a 1 in 71,000 chance of impact on 9 January 2089.〔 It was briefly downgraded to Torino Scale 0 in February 2008, but still showed a cumulative 1 in 53,000 chance of an impact.〔 In March it was back at Torino Scale 1 with a 1 in 28,000 chance of impact on 9 January 2089.〔 By mid April 2008, it was back to Torino Scale 0. It was removed from the Sentry Risk Table on 19 December 2009.〔(【引用サイトリンク】publisher=NASA/JPL Near-Earth Object Program Office )〕
== 2183 passage ==
may pass as close as from Earth on 2183-Jan-12.〔 But the nominal solution shows the asteroid passing from Earth.〔(【引用サイトリンク】arc: 10.8 years ">title=JPL Close-Approach Data: 332446 (2008 AF4) )〕
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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