other integrations and for other planets， although typical frequencies differ planet by planet and element by element.
4.2 long-term exchange of orbital energy and angular momentum
we calculate very long-periodic variation and exchange of planetary orbital energy and angular momentum using filtered delaunay elements l， g， h. g and h are equivalent to the planetary orbital angular momentum and its vertical component per unit mass. l is related to the planetary orbital energy e per unit mass as e=?μ2/2l2. if the system is completely linear， the orbital energy and the angular momentum in each frequency bin must be constant. non-linearity in
对火星轨道变化问题的最后解释(31/49)