Detailed survey of the phase space around Nix and Hydra

Á Süli, Z. S. Zsigmond

Research output: Contribution to journalArticle

12 Citations (Scopus)


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 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 pericentre 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 pericentre or longitude of node.

Original languageEnglish
Pages (from-to)2199-2208
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Publication statusPublished - Oct 1 2009


  • Celestial mechanics
  • Methods: numerical
  • Planets and satellites: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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