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Eckert is a tiny, isolated lunar impact crater in the northern part of the Mare Crisium (a circular region of relatively dark, flat material on the surface of the Moon). This crater forms a circular pit in the dark surface of the surrounding lunar mare. Just to the west is a wrinkle ridge in the mare surface, a feature that is prominent only under oblique lighting from the Sun. The nearest craters of note are Peirce to the west-northwest, and Picard to the southwest. Both of these craters lie in the Mare Crisium basin. ==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「Eckert (crater)」の詳細全文を読む スポンサード リンク
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