scat SCAT WCSTools 3.9.6, 31 August 2020, Jessica Mink (jmink@cfa.harvard.edu)
List catalog sources in a region on the sky
Usage: scat -c catalog [arguments] ra dec system (J2000, B1950, etc.)
  or : scat [arguments] list of catalog number ranges
  or : scat [arguments] @file of either positions or numbers)
  -a: List single closest catalog source
  -b: Output B1950 (FK4) coordinates
  -c name: Reference catalog (act, gsc, ua2, usa2, or local file
  -d: Output RA and Dec in degrees instead of hms dms
  -e: Output ecliptic coordinates
  -f: Output search center for other programs
  -g: Output galactic coordinates
  -h: Print heading, else do not 
  -i [length]: Print catalog object name, not catalog number (length optional)
  -j: Output J2000 (FK5) coordinates
  -k kwd: Add this keyword to output from tab table search
  -l: Print center and closest star on one line
  -mx mag1[,mag2]: Magnitude #x limit(s) (only one set allowed, default none) 
  -n num: Number of brightest stars to print (-1=all as found)
  -o name: Object name 
  -p: Sort by distance from search center
  -q year: Equinox of output positions in FITS date format or years
  -r rad: Search radius (<0=-half-width) in arcsec
  -r radi-rado: Inner and outer edges of search annulus in arcsec
  -r dx,dy: Search halfwidths in ra,dec in great circle arcseconds
  -rr dra,ddec: Search halfwidths in ra,dec in arcsec of RA and Dec
  -s d|e|mx|n|p|r: Sort by r=RA d=Dec mx=Mag#x n=none p=distance e=merge
  -t: Tab table to standard output as well as file
  -u x y: Print x y instead of number in front of non-tab entry
  -v: Verbose
  -w: Write output file search[objname].[catalog]
  -x type: GSC object type (0=stars 3=galaxies -1=all -2=bands)
  -y year: Epoch of output positions in FITS date format or years
     year,year: First and last acceptable catalog entry epochs
  -z: Append to output file search[objname].[catalog]
   x: Number of magnitude must be same for sort and limits
      and x may be omitted from either or both -m and -s m