On the Secular Behavior of Irregular Satellites

  title={On the Secular Behavior of Irregular Satellites},
  author={M. {\'C}uk and J. Burns},
  journal={The Astronomical Journal},
Although analytical studies on the secular motion of the irregular satellites have been published recently, these theories have not yet been satisfactorily reconciled with the results of direct numerical integrations. These discrepancies occur because in secular theories the disturbing function is generally averaged over the Sun's orbital motion, whereas instead one should take into account some periodic terms, most notably the so-called evection, which can be large for distant, slow-moving… Expand
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