• Coordinates must be in decimal degrees and separated by a space; no commas.
  • PGC numbers are numeric, no leading zeros needed.
  • IDs must match precisely, so use all digits:
    • {NGC|IC}0000, e.g.: NGC0023
    • UGC00000, e.g.: UGC00005
    • ESO000-000, e.g.: ESO005-009
    • MCG{+|-}00-00-000, e.g: MCG+00-06-003
    • PGC000000, e.g.: PGC000012, but also PGC1008606
    • SDSSJ000000.00{+|-}000000.0, e.g.: SDSSJ001139.98-002826.1
    • 2MASXJ00000000{+|-}0000000, e.g.: 2MASXJ08131510+2331352
    • An example SDSS galaxy: 587722982822379684
    • Anonymous galaxies - A000000{+|-}0000, e.g.: A000249+0045
    • For supernovae leave off the 'SN', e.g.: 2006gy