 light time
                             solution.

                  'XCN+S'    &quot;Transmission&quot; case:  converged
                             Newtonian light time and stellar
                             aberration corrections.

      obsrvr   the name of a observing body. Optionally, you may supply
               the integer ID code for the object as an integer string,
               i.e. both 'MOON' and '301' are legitimate strings that
               indicate the Moon is the observing body.

  