Williams (lunar crater)

This article is about the crater on the Moon. For the Martian crater, see Williams (Martian crater).

Williams is the remnant of a lunar impact crater that lies to the south of the prominent crater Hercules, in the northeastern part of the Moon. The southern rim borders the Lacus Somniorum, a small lunar mare that extends to the south and west. To the southwest is the sharp-rimmed crater Grove.

Williams

Lunar Orbiter 4 image
Coordinates	42°00′N 37°12′E / 42.0°N 37.2°E / 42.0; 37.2
Diameter	36 km
Depth	0.7 km
Colongitude	323° at sunrise
Eponym	Arthur S. Williams

Little remains of the original crater, besides a low curving ridge. The rim has been nearly destroyed along the northwest face, leaving only a few ridges in the surface. The remainder forms an irregular horseshoe, with the western part attached to a series of ridges leading to the west. The interior floor has been resurfaced by basaltic lava, forming a flat, nearly featureless surface that is marked only by a pair of tiny craters near the northeast rim.

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 Williams.

Williams	Latitude	Longitude	Diameter
F	43.5° N	38.2° E	7 km
M	41.2° N	38.8° E	5 km
N	42.1° N	36.3° E	5 km
R	42.5° N	38.3° E	4 km

References

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• Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
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• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.