 = [0:4]*100000. + et;

      disp( 'Vector' )
      vec_epoch = <a href="cspice_et2utc.html">cspice_et2utc</a>( vec_et, 'C', 3 );

      %
      % Look up the position vectors and light time values
      % 'ltime'  corresponding to the vector of input
      % ephemeris time 'vec_et'.
      %
      [pos , ltime] = <b>cspice_spkpos</b>( target, vec_et, ...
                                       frame, abcorr, observer );

      for i=1:5

         txt = sprintf(  'At epoch (UTC)     : %s', vec_epoch(i,:) );
