Merrill (crater)

Merrill

Oblique Lunar Orbiter 5 image, facing west
Coordinates	75.2°N 116.3°W / 75.2; -116.3
Diameter	57 km
Depth	Unknown
Colongitude	119° at sunrise
Eponym	Paul W. Merrill

Merrill is a lunar impact crater. It is located in the high northern latitudes, on the far side. Less than one crater diameter to the south-southwest of Merrill is the similar Niepce, and to the east along the northern limb is the larger Brianchon.

The outer rim of Merrill is worn and the features are softened, but only a few impact craters lie along the edge and inner side. The inner walls are uneven slopes down to the relatively flat interior floor. This surface is marked by several small craterlets, including a pair near the midpoint. The satellite craters Merrill X and Merrill Y form a merged, dual-lobed feature that is attached to the northern outer rim of Merrill.^{[citation needed]}

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 Merrill.

Merrill	Latitude	Longitude	Diameter
X	77.0° N	119.2° W	34 km
Y	76.8° N	115.4° W	35 km

References

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• Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
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• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
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• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.