 to
                              hit the target.

                   'XCN'      &quot;Transmission&quot; case:  converged
                              Newtonian light time correction.

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


                Neither special nor general relativistic effects are
                accounted for in the aberration corrections appli