NAME:
  astpred
 PURPOSE:
  Simple asteroid position predictor when no orbit is available.
 DESCRIPTION:

 CATEGORY:
  Astrometry

 CALLING SEQUENCE:
  astpred,astfile,jdi,ra,dec

 INPUTS:
  astfile - file name for set of astrometric observations for object.
  jdi     - Time(s) to predict location for.

 OPTIONAL INPUT PARAMETERS:

 KEYWORD INPUT PARAMETERS:
  QUIET   - No printed or plotted output.

 OUTPUTS:
  rai     - RA of predicted location.
  deci    - Dec of predicted location.

 KEYWORD OUTPUT PARAMETERS:

 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:

 MODIFICATION HISTORY:
 1998/01/08, written by Marc W. Buie, Lowell Observatory
 2009/10/02, MWB, removed obsolete Poly_fit arguments