Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution

  title={Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution},
  author={Fernando Roig and David Nesvorn{\'y} and Sylvio Ferraz-Mello},
  journal={Monthly Notices of the Royal Astronomical Society},
The 2 : 1 mean motion resonance with Jupiter in the main asteroid belt is associated to one of the largest Kirkwood gaps: the so-called Hecuba gap. Centred at about 3.3 au, the Hecuba gap is characterized by a very small number of asteroids when compared to its neighbourhoods. Long-term instabilities caused by resonant planetary perturbations are thought to be responsible for the almost lack of bodies in the gap. However, current observations suggest a significant population of asteroids in the… 
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