Horrebow (crater)

Horrebow
	Lunar Orbiter 4 image
Coordinates	58.7°N 40.8°W
Diameter	24 km
Depth	2.5 km
Colongitude	41° at sunrise
Eponym	Peder Horrebow

Horrebow is a lunar impact crater that is located along the northern shore of Mare Frigoris, just to the south of the walled plain J. Herschel. To the west of Horrebow is the crater Robinson.

The crater is named after Danish astronomer Peder Horrebow.[1]

Horrebow is roughly circular, but it has a narrower inner wall along the east and southeast sides than elsewhere around the perimeter. The inner walls have slumped, forming a ledge around the base of the slope. The interior floor is circular, but is offset to the east due to the asymmetry of the wall. The rim of the crater is sharp-edged, and is not significantly eroded.

The crater overlies the southwest part of a similar-sized crater with the designation Horrebow A. This satellite crater also joins the southeast rim of J. Herschel.

Satellite craters

Horrebow and its satellite craters (LRO image from October 2010)

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Horrebow.

Horrebow	Latitude	Longitude	Diameter
A	59.2° N	40.4° W	25 km
B	58.7° N	42.7° W	13 km
C	56.9° N	36.0° W	5 km
D	57.9° N	38.7° W	5 km
G	59.7° N	41.7° W	8 km

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References

"Gazetteer of Planetary Nomenclature | Horrebow". usgs.gov. International Astronomical Union. Retrieved August 22, 2017.

Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.CS1 maint: ref=harv (link)
Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.CS1 maint: ref=harv (link)
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McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.CS1 maint: ref=harv (link)
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 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763.CS1 maint: ref=harv (link)
Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.CS1 maint: ref=harv (link)
Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.CS1 maint: ref=harv (link)
Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.CS1 maint: ref=harv (link)
Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.CS1 maint: ref=harv (link)
Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.CS1 maint: ref=harv (link)
Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.CS1 maint: ref=harv (link)

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[1] "Gazetteer of Planetary Nomenclature | Horrebow". usgs.gov. International Astronomical Union. Retrieved August 22, 2017.