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Mach (crater)
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Everything about Mach Crater totally explained

Mach is a large lunar crater of the class known as a walled plain. It is located on the far side of the Moon and can not be viewed directly from the Earth. Nearby craters of note include Joule to the northeast, Mitra attached to the western outer rim, and Henyey to the southwest.
   This is a prominent but eroded formation with multiple craters along the rim and interior. The Harvey crater breaks across the eastern rim, and the outer spills across the interior floor of Mach. The overall shape of Mach resembles a pear, with a prominent outward bulge to the northeast. Such a bulge can be caused by a second, merged crater. The northern edge is also the most worn and overlaid by impacts.
   The interior of Mach is marked by several small craters, particularly in the northeastern bulge. Several craters also lie along the edges to the west and northwest. The remainder of the interior floor is relatively level, when compared to the terrain that surrounds Mach. There is a formation of central ridges near the mid-point of the crater. (Or at least the center if the northeastern bulge is disregarded.)

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that's closest to Mach crater.
Mach Latitude Longitude Diameter
H 14.9° N 144.1° W 40 km

Further Information

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