| 翻訳と辞書 |
2012 FN
is an Apollo asteroid and a near-Earth object〔 that has a 1 in 4 billion chance of impacting Earth on 7 March 2113.〔 It is estimated to be 5 meters in diameter, which means that it poses no threat if it impacts Earth. An impact would have the kinetic energy of about 3 kt of TNT,〔 and would probably result in an air burst in the upper atmosphere. It is the least threatening asteroid listed on the Sentry Risk Table.〔(Sentry Risk Table ) (NASA JPL)〕 The very short observation arc of only 3 hours〔 results in a very poorly constrained orbit, and it could just as easily be 2 AU from Earth on 7 March 2113.〔
==See also==
*List of Apollo asteroids
*
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「2012 FN」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.
|
|