Beer (lunar crater) explained

Coordinates:	27.1°N -9.1°W
Diameter:	10 km
Depth:	1.7 km
Colong:	9
Eponym:	Wilhelm W. Beer

Beer is a relatively small lunar impact crater located on the Mare Imbrium, to the east of the crater Timocharis. It was named after German astronomer Wilhelm W. Beer. Just to the northwest is the matching twin Feuillée.

Beer is a circular, cup-shaped crater with a sharp-edged rim that has not been significantly eroded. The interior has a higher albedo than the surrounding lunar mare, which is usually an indication of a relatively young crater. A string of craters arc away from the rim to the southeast, which then grade into a straight rille, and were once known as Fossa Archimedes or Archimedes Rille, but now are officially unnamed.

The mare to the east has a higher albedo than the surrounding surface, and this lighter-hued surface reaches to the base of the Montes Archimedes. To the southeast of Beer is a lunar dome that is of comparable diameter to the crater.

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 Beer.

Beer	Latitude	Longitude	Diameter
A	27.2° N	8.6° W	4 km
B	25.7° N	9.0° W	2 km
E	27.8° N	7.8° W	3 km

External links

• Beer Lunar Topographic Orthophotomap, LTO41A4, May 1974

References

• Book: NASA Catalogue of Lunar Nomenclature . Whitaker . E. A. . 1982 . NASA RP-1097 . Andersson . L. E. . Ewen Whitaker .
• Book: The Clementine Atlas of the Moon . Spudis . P. . 2004 . . 978-0-521-81528-4 . New York . Bussey . B. . Ben Bussey . Paul Spudis .
• Book: Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature . Cocks . Josiah C. . 1995 . Tudor Publishers . 978-0-936389-27-1 . Cocks . Elijah E. .
• Web site: Lunar Nomenclature . McDowell . Jonathan . July 15, 2007 . . 2007-10-24 .
• 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. 1971SSRv...12..136M. 10.1007/BF00171763. Menzel. D. H.. 122125855.
• Book: Moore , Patrick . On the Moon . 2001 . . 978-0-304-35469-6 . Patrick Moore .
• Book: Price , Fred W. . The Moon Observer's Handbook . 1988 . Cambridge University Press . 978-0-521-33500-3 .
• Book: Rükl , Antonín . Atlas of the Moon . 1990 . . 978-0-913135-17-4 . Antonín Rükl .
• Book: Webb , Rev. T. W. . Celestial Objects for Common Telescopes . 1962 . Dover . 978-0-486-20917-3 . 6th revised . Thomas William Webb .
• Book: Whitaker , Ewen A. . Mapping and Naming the Moon . 1999 . Cambridge University Press . 978-0-521-62248-6 . Ewen Whitaker .
• Book: Wlasuk , Peter T. . Observing the Moon . 2000 . Springer . 978-1-85233-193-1 .