Hilbert (crater)

From Wikipedia, the free encyclopedia

Crater characteristics
Hilbert from Apollo 15. NASA photo.
Coordinates	17.9° S, 108.2° E
Diameter	151 km
Depth	Unknown
Colongitude	254° at sunrise
Eponym	David Hilbert

Hilbert is a lunar crater that is located on the far side of the Moon, just past the southeast limb. It lies just beyond the region of the surface that is occasionally brought into view due to libration, and so this feature can not be observed directly from the Earth.

The crater is attached to the southeast rim of the Pasteur walled-plane, a formation nearly half again as large as Hilbert. To the southeast of Hilbert is the smaller Alden crater, while Backlund crater lies to the west-northwest.

Much of the outer rim of Hilbert remains relatively intact, although it is heavily eroded in places particularly in the south. The interior is relatively flat, but has been deeply gouged by several small craters. There is a short range of central ridges offset to the west of the interior mid-point. Just to the west of the ridges is 'Hilbert W', a crater with a smaller crater overlaying the western rim — giving it a pear-like shape. 'Hilbert H' is a circular, bowl-shaped crater in the east part of the floor. Next to the northern rim is 'Hilbert Y'. There are also many lesser craterlets situated about the interior.

[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 Hilbert crater.

Hilbert	Latitude	Longitude	Diameter
A	15.9° S	108.7° E	11 km
E	16.5° S	111.8° E	49 km
G	19.0° S	114.0° E	50 km
H	18.2° S	109.6° E	14 km
L	21.2° S	108.9° E	32 km
S	18.1° S	105.8° E	12 km
W	17.1° S	107.6° E	20 km
Y	15.6° S	107.5° E	28 km

[edit] 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. Retrieved on 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. 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. 
• 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, 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.