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Roche (crater)
Roche is a large crater on the far side of the Moon from the Earth. The prominent crater Pauli lies across the southern rim of Roche, and the outer rampart of Pauli covers a portion of Roche's interior floor. To the north-northwest of Roche is the crater Eötvös, and just to the west-northwest lies Rosseland.
The western rim of Roche has been somewhat distorted and straightened. The rim as a whole is worn and eroded, with multiple tiny craterlets marking the surface. The satellite crater Roche B lies across the northeastern inner wall.
The interior floor of Roche is relatively level, but is also marked by several small and tiny craterlets. A grouping of these craters lies near the midpoint. Just to the northwest of this grouping is a bright patch of high-albedo material. Sections of the floor along the north-northwestern side have a lower albedo than elsewhere, usually an indication of basaltic-lava flows similar to what fills the lunar maria. The extent of this patch may actually be larger, but covered with higher-albedo ejecta.
==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 Roche.
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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