Lunar Craters/Nomenclature

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lunarcraters_aw82_w_nomen.shp GIS shapefile was generated from the
original file called "Craters" from the website listed below. New
fields lat and longis180 were added to remove the cardinal
directions from the latitude and logitude values for ingestion
into a GIS.

this section added by Trent Hare, USGS, Mar 2004 
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original page link: http://www.planet4589.org/astro/lunar

Jonathan McDowell created a digital version of the list of lunar craters
in the NASA Catalog of Lunar Nomenclature (NASA-RP-1097, Andersson and
Whitaker 1982, hereafter AW82). 

"Craters.AW82" contains name, latitude, longitude and diameter in km
for each crater listed in the first table of AW82. There may be some
typos; please let me know if you find any discrepancies between this
list and AW82.

"Craters" is a merge of the AW82 list with the list on the USGS site
http://planetarynames.wr.usgs.gov/. Since the publication of AW82 there
have been a number of changes to lunar nomenclature and this merge brings
the data up to date. 

The file contains name, latitude, longitude, diameter, feature type,
citation for first description (incomplete), citation for first use
of nomenclature (incomplete). It uses the same convention as the USGS
for diacritical marks (e.g. |: for umlaut). 

"Notes" describes in detail the choices I made in this merging process. 

"Refs" gives a key to the nomenclature citations used in the Craters and
Features files. 

Jonathan McDowell, 2004 Mar 8.