The Dynamics of Plutinos

@article{Yu1999TheDO,
  title={The Dynamics of Plutinos},
  author={Qingjuan Yu and Scott Tremaine},
  journal={The Astronomical Journal},
  year={1999},
  volume={118},
  pages={1873 - 1881}
}
Plutinos are Kuiper belt objects that share the 3:2 Neptune resonance with Pluto. The long-term stability of Plutino orbits depends on their eccentricity. Plutinos with eccentricities close to Pluto's (fractional eccentricity difference Δe/eP = |e - eP|/eP ≲ 0.1) can be stable because the longitude difference librates, in a manner similar to the tadpole and horseshoe libration in co-orbital satellites. Plutinos with Δe/eP ≳ 0.3 can also be stable; the longitude difference circulates and close… 

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