NAME:
  orb2obj
 PURPOSE:   (one line only)
  Extract object names from a slop orbit output file
 DESCRIPTION:
 CATEGORY:
  Astronomy
 CALLING SEQUENCE:
  orb2obj,fn
 INPUTS:
  fn - name of orbit file to read
 OPTIONAL INPUT PARAMETERS:
 KEYWORD INPUT PARAMETERS:
 OUTPUTS:
  The input file name is expected to be something like .orb.  A file
    .obj is written based on what is found in the .orb file.
 KEYWORD OUTPUT PARAMETERS:
 CONFIGURATION:
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  Written by Marc W. Buie, Southwest Research Institute, 2023/03/27