sua2 USNO-A2.0 Catalog Search Program

By default, only the brightest 100 objects (or closest 100, if the -s p option is used) are returned. Use the -n option to increase this number.

Output is to standard out, unless the -w flag is set, in which case it goes to objectname.uac or search.uac. It is somewhat similar to RGSC, which can search from lists of coordinates but cannot sort the output. The UA2 number is the zone ((90 + declination in degrees) * 10) followed by the sequence number of the star within the RA-sorted zone. This number will change with each release of the USNO A catalog.

Set the environment variable UA2_PATH to the directory containing the region files or UA2_ROOT to the directory below which the CDROMs (ua001, ua002,...ua011) are mounted. If neither environment variable is set, the default is to look in the directory /data/ua2, where the catalog resides at the Center for Astrophysics. The default is the value of the variable ua2path in the source code file libwcs/uacread.c.

[ Search the USNO-A2.0 Catalog using this software]

Command Line Arguments

CGI Queries and Parameters

As of version 2.8.6, sua2 can be used remotely as a CGI executable.

Examples

Search with results to standard output
Search with results to a file
Find closest star
Find stars by number
Match stars in input catalog
Search over the web with results to standard output

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Last updated 28 January 2003 by Doug Mink dmink@cfa.harvard.edu