A Pluto–Charon Concerto: An Impact on Charon as the Origin of the Small Satellites

@article{Bromley2020APC,
  title={A Pluto–Charon Concerto: An Impact on Charon as the Origin of the Small Satellites},
  author={Benjamin C. Bromley and Scott J. Kenyon},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2020}
}
We consider a scenario where the small satellites of Pluto and Charon grew within a disk of debris from an impact between Charon and a trans-Neptunian Object (TNO). After Charon's orbital motion boosts the debris into a disk-like structure, rapid orbital damping of meter-size or smaller objects is essential to prevent the subsequent re-accretion or dynamical ejection by the binary. From analytical estimates and simulations of disk evolution, we estimate an impactor radius of 30-100 km; smaller… 

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