Nix和Hydra周围相空间的详细调查
Detailed survey of the phase space around Nix and Hydra
摘要：
我们提出了一个详细的调查相空间的动力学结构的冥王星-冥卫一系统的新卫星周围。以空间椭圆型限制性三体问题为模型，利用混沌指标建立了系统的稳定性映射。卫星的轨道根数在半长轴-偏心率空间和半长轴-倾角空间都处于稳定区域。与4：1和6：1平均运动共振相关的结构在图上清晰可见。它们不包含卫星的位置，证实了以前的研究。我们证明了如果Nix的近心辐角或节点经度在一定范围内，它可能处于4：1共振中。结果强烈地表明，Hydra不是在6：1共振的近心角或经度的任意值的节点。
英文摘要：
We present a detailed survey of the dynamical structure of the phase space around the new moons of the Pluto - Charon system. The spatial elliptic restricted three-body problem was used as model and stability maps were created by chaos indicators. The orbital elements of the moons are in the stable domain both on the semimajor axis - eccentricity and - inclination spaces. The structures related to the 4:1 and 6:1 mean motion resonances are clearly visible on the maps. They do not contain the positions of the moons, confirming previous studies. We showed the possibility that Nix might be in the 4:1 resonance if its argument of pericenter or longitude of node falls in a certain range. The results strongly suggest that Hydra is not in the 6:1 resonance for arbitrary values of the argument of pericenter or longitude of node.
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