ions, then 'lt' is the
            one-way light time between the observer and the
            light time corrected target location.

            [1,n] = size(lt); double = class(lt)

            'pos' and 'lt' return with the same vectorization
            measure, N, as 'et'.

</pre><h4><a name="Examples">Examples</a></h4><pre>

   Any numerical results shown for this example may differ between
   platforms as the results depend on the SPICE kernels used as input
   and the machine specific arithmetic imp