the planetary system can cause an exchange of energy and angular momentum in the frequency domain. the amplitude of the lowest-frequency oscillation should increase if the system is unstable and breaks down gradually. however， such a symptom of instability is not prominent in our long-term integrations.
in fig. 7， the total orbital energy and angular momentum of the four inner planets and all nine planets are shown for integration n+2. the upper three panels show the long-periodic variation of total energy (denoted ase- e0)， total angular momentum ( g- g0)， and the vertical component ( h- h0) of the inner four planets calculated from the low-pa
对火星轨道变化问题的最后解释(32/49)