the orbital variation of the mercury. however， we cannot neglect the conibution from other terresial planets， as we will see in subsequent sections.
4.4 long-term coupling of several neighbouring planet pairs
let us see some individual variations of planetary orbital energy and angular momentum expressed by the low-pass filtered delaunay elements. figs 10 and 11 show long-term evolution of the orbital energy of each planet and the angular momentum in n+1 and n?2 integrations. we notice that some planets form apparent pairs in terms of orbital energy and angular momentum exchange. in particular， venus and earth make a typical pair. in the
对火星轨道变化问题的最后解释(35/49)