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19741 Callahan : ウィキペディア英語版 | 19741 Callahan
19741 Callahan is a main belt asteroid with a perihelion of 1.8584973 AU. It has an eccentricity of 0.1308822 and an orbital period of 1230.5673756 days (3.37 years).〔(【引用サイトリンク】 JPL Small-Body Database Browser )〕 Callahan has an orbital velocity average of 19.86850048 km/s and a tilt of 8.04882°. This asteroid was discovered on January 5, 2000 by LINEAR. This asteroid is named after Diane Callahan who mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, a middle school science competition.〔 ==References==
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「19741 Callahan」の詳細全文を読む
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