The chaotic obliquity of the planets
The chaotic obliquity of the planets
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DOI：
10.1038/361608a0
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发表时间：
1993-02
期刊：
影响因子：
64.8
通讯作者：
J. Laskar;P. Robutel
中科院分区：
文献类型：
--
作者：
J. Laskar;P. Robutel
对行星自旋轴方向（平行度）对长期轨道扰动的全局稳定性的数值研究表明，所有类地行星在过去的某个时候都可能经历了大的，混乱的平行度变化。火星的倾斜度仍然处于一个大的混乱区域，范围从0°到60°。水星和金星因潮汐消散而稳定，地球可能因月球被捕获而稳定。因此，没有一个类地行星可以被认为是原始的。
Numerical study of the global stability of the spin-axis orientation (obliquity) of the planets against secular orbital perturbations shows that all of the terrestrial planets could have experienced large, chaotic variations in obliquity at some time in the past. The obliquity of Mars is still in a large chaotic region, ranging from 0° to 60°. Mercury and Venus have been stabilized by tidal dissipation, and the Earth may have been stabilized by capture of the Moon. None of the obliquities of the terrestrial planets can therefore be considered as primordial.