**
Equations of Motion
**

If you are familiar with dynamical systems you probably know that the
dots above the variable's represent differentiation with respect to
time. If you are familiar with the circular restricted three body
problem you will know that mu is the ratio of the smaller mass to that
of the larger mass (*3.03591e-6* for the Earth-Sun system). If you are
familiar with neither of the above ... you are now in the know.