J. Herschel (crater)

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For other craters in the Solar System named Herschel, see Herschel (crater).

Crater characteristics
Coordinates	62.0° N, 42.0° W
Diameter	165 km
Depth	Unknown
Colongitude	46° at sunrise
Eponym	John Herschel

J. Herschel is large lunar crater of the variety termed a walled-plain. It is located in the northern part of the Moon's surface, and so appears foreshortened when viewed from the Earth. The southeastern rim of J. Hershel forms part of the edge of the Mare Frigoris lunar mare. To the northwest is Anaximander crater. Bordering the northern rim is a large, unnamed lunar plain. Just to the south is the small Horrebow crater.

The rim of this crater has been heavily eroded, to the point where it is frequently described as "considerably disintegrated". The remaining rim survives as a ring of ridges that have been resculpted by subsequent impacts. The interior floor is relatively level, but irregular and marked by a multitude of tiny impacts. The most notable of these are the satellite craters C, D, K, and L, listed in the table below. 'Horrebow A' is attached to the southern rim of the crater, and is overlapped along its southwest rim by Horrebow.

[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 J. Herschel crater.

J. Herschel	Latitude	Longitude	Diameter
B	59.9° N	38.8° W	7 km
C	62.3° N	39.9° W	12 km
D	60.4° N	38.0° W	10 km
F	58.8° N	35.4° W	19 km
K	62.9° N	39.3° W	8 km
L	61.0° N	40.0° W	7 km
M	57.3° N	32.9° W	9 km
N	60.0° N	32.8° W	7 km
P	63.5° N	32.8° W	6 km
R	62.5° N	30.6° W	9 km

[edit] References

• Wood, Chuck (2006-06-18). Oozing Ejecta. Lunar Photo of the Day. Retrieved on 2006-07-12.
• Andersson, L. E.; Whitaker, E. A., (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097. 
• Blue, Jennifer (July 25, 2007). Gazetteer of Planetary Nomenclature. USGS. Retrieved on 2007-08-05.
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• McDowell, Jonathan (July 15, 2007). Lunar Nomenclature. Jonathan's Space Report. Retrieved on 2007-10-24.
• Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by The Working Group of Commission 17 of the IAU". Space Science Reviews 12: 136. 
• Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4. 
• Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 0521335000. 
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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.