<h2>AAS 97-101</h2>
<h2>ALTERNATIVE ORBITAL MECHANICS ANALYSIS                                                                                                           </h2>
<h4> R. H. Jacobson, Casper, WY                                                                                                                                               </h4>
<h2> Abstract </h2>
The computations for orbital mechanics can be simplified using two velocity  components which remain constant in magnitude throughout an orbit.  One is  perpendicular to the position vector (Q) and the other is perpendicular to the major axis (C).  Eccentricity, semi-major axis, velocity and position vectors can  be expressed in terms of Q and C.  A new Q and C for an altered orbit can be found  as well as the orbit's orientation and the true anomaly at the point of change.  One can reverse the process and find the impulse thrust required to establish a new orbit.