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4217 Engelhardt : ウィキペディア英語版 | 4217 Engelhardt 4217 Engelhardt is a main-belt asteroid, discovered on January 24, 1988 by Carolyn S. Shoemaker at Palomar Observatory.〔 Its provisional designation was 1988 BO2. It is named after the Baltic German geologist and mineralogist Wolf von Engelhardt (1910–2008). The asteroid is estimated to be about in diameter.〔 Engelhardt will pass about from Earth threatening asteroid (29075) 1950 DA in 2736.〔 ==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「4217 Engelhardt」の詳細全文を読む
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