Making Planet Nine: A Scattered Giant in the Outer Solar System

  title={Making Planet Nine: A Scattered Giant in the Outer Solar System},
  author={Benjamin C. Bromley and Scott J. Kenyon},
  journal={arXiv: Earth and Planetary Astrophysics},
Correlations in the orbits of several minor planets in the outer solar system suggest the presence of a remote, massive Planet Nine. With at least ten times the mass of the Earth and a perihelion well beyond 100 AU, Planet Nine poses a challenge to planet formation theory. Here we expand on a scenario in which the planet formed closer to the Sun and was gravitationally scattered by Jupiter or Saturn onto a very eccentric orbit in an extended gaseous disk. Dynamical friction with the gas then… Expand

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