Preface; 1. Newtonian mechanics; 2. Newtonian gravity; 3. Keplerian orbits; 4. Orbits in central force-fields; 5. Rotating reference frames; 6. Lagrangian mechanics; 7. Rigid body rotation; 8. Three-body problem; 9. Secular perturbation theory; 10. Lunar motion; Appendix A: useful mathematics; Appendix B: derivation of Lagrange planetary equations; Appendix C: expansion of orbital evolution equations; Bibliography; Index.