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SCAT(7) Miscellaneous Information Manual SCAT(7) NAME scat - sky catalogue SYNOPSIS scat DESCRIPTION Scat looks up items in catalogues of objects outside the solar system. Items are read, one per line, from the standard input, and their de- scriptions or cross-index listings (suitable for input to scat) are printed on the standard output. An item is in one of the following formats: ngc1234 Number 1234 in the Revised New General Catalogue of Nonstellar Objects. The output identifies the type pn=planetary nebula, gc=globular cluster, oc=open cluster, dn=diffuse nebula or nc=nebular cluster), possibly contained within the Large Magel- lanic Cloud (in lmc) or Small Magellanic Cloud (in smc), its po- sition in 2000.0 coordinates and galactic coordinates, and a brief description. sao12345 Number 12345 in the Smithsonian Astrophysical Star Catalogue. Output identifies the visual and photographic magnitudes, 2000.0 coordinates, proper motion, spectral type, multiplicity and variability class, and HD number. m4 Catalog number 4 in Messier's catalog. The output is the NGC number. "alpha umi" Star names are provided in double quotes. Known names are the Greek letter designations, proper names such as Betelgeuse, and bright variable stars. Constellation names must be the three- letter abbreviations. The output is the SAO number. For non- Greek names, SAO numbers and names are listed for all stars with names for which the given name is a prefix. 12h34m -16 Coordinates in the sky are translated to the nearest `patch', approximately one square degree of sky. The output is the coor- dinates identifying the patch, the constellations touching the patch, and the NGC and SAO objects in the patch. c umi Gives voluminous output consisting of the patches covering the named constellation. FILES SEE ALSO sky(7) /n/kwee/usr/rob/sky2/constelnames for the three-letter abbreviations of the constellation names. BUGS The database is fine, but the program is feeble. Coordinates printed by the program in the listings for SAO and NGC ob- jects are not understood as input. SCAT(7)