Henry (lunar crater)

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Crater characteristics
Coordinates	24.0° S, 56.8° W
Diameter	41 km
Depth	Unknown
Colongitude	57° at sunrise
Eponym	Joseph Henry

Henry is a lunar crater that is located to the northwest of the larger Cavendish crater, in the southeastern part of the Moon's near side. Less than a half diameter to the northwest is similar dimensioned Henry Frères crater, named for the brothers Paul and Prosper Henry.

The outer rim of Henry crater has undergone some impact erosion, particularly in the south and southeast where it is overlaid by a pair of small craters. The former crater lies along the inner wall and part of the interior floor, with a rampart ridge to the north. The rim bulges outward slightly between these two depressions, and there are slight outward bulges to the north and northeast. The interior floor is relatively featureless, with an albedo that matches the surrounding terrain. A ray from 'Byrgius A', a satellite of Byrgius crater, crosses the northern half of the crater from west to east-northeast.

[edit] Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Henry crater.

Henry	Latitude	Longitude	Diameter
A	24.5° S	57.1° W	8 km
B	24.3° S	56.3° W	5 km
D	24.9° S	59.1° W	7 km
J	22.8° S	55.4° W	5 km
K	23.2° S	55.5° W	6 km
L	25.5° S	57.4° W	6 km
M	25.8° S	57.6° W	13 km
N	26.1° S	58.3° W	9 km
P	25.8° S	59.0° W	6 km

[edit] References

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• Blue, Jennifer (July 25, 2007). Gazetteer of Planetary Nomenclature. USGS. Retrieved on 2007-08-05.
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• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes, 6th revision, Dover. ISBN 0-486-20917-2. 
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 0-521-62248-4. 
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 1852331933.