Demonax (crater)

This article is about lunar crater. For other uses, see Demonax (disambiguation).

Demonax (crater)

Coordinates	78°12′S 59°00′E / 78.2°S 59.0°E / -78.2; 59.0Coordinates: 78°12′S 59°00′E / 78.2°S 59.0°E / -78.2; 59.0
Diameter	114 km
Depth	2.9 km
Colongitude	310° at sunrise
Eponym	Demonax

Demonax is a lunar impact crater near the southern limb of the Moon. This location makes the crater difficult to observe due to foreshortening. The crater is also illuminated at a very low angle, when it is in the sunlit side. Demonax lies just to the north of the crater Scott, one of the south polar formations. To the north-northwest is Boguslawsky.

This crater has a worn and eroded rim, with several small craters lying along the edge and the inner walls. The southeast rim in particular has a notable collection of impacts, including the satellite crater Demonax A which intrudes into the interior floor. The crater bottom has been resurfaced, leaving a flat, level floor. However there is a group of central peaks near the mid-point, and the northern part of the floor is rough and hummocky. The remains of some terraces are visible along the western interior floor.

Due to the low angle of sunlight reaching this crater, the inner wall along the north side of the crater receives very little sunlight.

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 Demonax.

Demonax	Latitude	Longitude	Diameter
A	79.1° S	64.3° E	16 km
B	81.5° S	73.9° E	19 km
C	80.1° S	54.9° E	10 km
E	78.3° S	43.4° E	40 km

References

• 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. http://planetarynames.wr.usgs.gov/. Retrieved 2007-08-05. 
• Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2. 
• Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 0-936389-27-3. 
• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. http://host.planet4589.org/astro/lunar/. Retrieved 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 (2): 136–186. Bibcode 1971SSRv...12..136M. doi:10.1007/BF00171763.  edit
• 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 0-521-33500-0. 
• Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8. 
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revision ed.). 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 1-85233-193-3.