220(6): Interrelation of Angles, Three Particle Problem

This note explains how the three particle problem perturbs the two particle problem by considering a sun earth Mars system for example, in one plane. The earth Mars orbit is given to a rough first approximation in eq. (21) in terms of the time dependence of the polar angle theta3 of the orbit expressed in terms of the earth sun and Mars sun orbits. The next note will extend this analysis.


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