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(237442) 1999 TA10
, provisionally known as 1999 TA10, is a near-Earth object (NEO) from the Amor asteroid group.〔 It is suspected of being an inner fragment of the differentiated asteroid 4 Vesta.
Given an absolute magnitude (H) of 17.9,〔 and that the albedo is unknown, this NEO could vary from 500 to 1500 meters in diameter.〔
was discovered on 5 October 1999 at apparent magnitude 17.7,〔 when it was only 0.39 AU from Earth.〔(【引用サイトリンク】title=JPL Close-Approach Data: 237442 (1999 TA10) )〕 In 2010, it came within 0.3 AU of Earth.〔 During the 2010 close approach, NASA Infrared Telescope Facility (NASA IRTF) studies suggested that originated from the interior of Vesta.〔 The next close approach will be in 2023.〔 In 2086, it will come within of Mars.〔
==See also==
*Vestoid
*V-type asteroid
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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