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Spencer Jones is a lunar impact crater on the Moon's far side. It is a roughly circular feature with a rim edge that is only moderately eroded. The inner wall of Spencer Jones is wider than elsewhere. The interior floor is relatively level with a low ridge offset to the south of the midpoint. Attached to the southwestern outer rim is the small satellite crater Spencer Jones Q. It is named after its discoverer Harold Spencer Jones. Just over 20 km from Spencer Jones is the slightly smaller crater Papaleksi to the south-southwest. To the northeast lies Anderson. The crater lies at the southwest margin of the Freundlich-Sharonov Basin. ==Satellite craters== By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Spencer Jones. 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「Spencer Jones (crater)」の詳細全文を読む スポンサード リンク
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