Detailed survey of the phase space around Nix and Hydra

Details Detailed survey of the phase space around Nix and Hydra Detailed survey of the phase space around Nix and Hydra

2009-10-07

arxiv.org/abs/0910.1271v1

Mon.Not.Roy.Astron.Soc.398:2199-2208,2009

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Published in MNRAS. 10 pages, 7 figures, 4 tables

Scientific paper

10.1111/j.1365-2966.2009.15274.x

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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