ch;
      dtdec   = t - dec_epoch;

      ra_deg  = ra_deg_0  + dtra * ra_pm;
      dec_deg = dec_deg_0 + dtra * dec_pm;

      ra      = ra_deg  * <a href="cspice_rpd.html">cspice_rpd</a>;
      dec     = dec_deg * <a href="cspice_rpd.html">cspice_rpd</a>;

      starpos = <a href="cspice_radrec.html">cspice_radrec</a>( 1, ra, dec );


      %
      % Correct star position for parallax applicable at
      % the Cassini orbiter's position. (The parallax effect
      % is negligible in this case; we're simpl