Memories of past close encounters in extreme trans-Neptunian space: Finding unseen planets using pure random searches

  title={Memories of past close encounters in extreme trans-Neptunian space: Finding unseen planets using pure random searches},
  author={Carlos de la Fuente Marcos and Ra{\'u}l de la Fuente Marcos},
  journal={Astronomy \& Astrophysics},
Context. The paths followed by the known extreme trans-Neptunian objects (ETNOs) effectively avoid direct gravitational perturbations from the four giant planets, yet their orbital eccentricities are in the range between 0.69−0.97. Solar system dynamics studies show that such high values of the eccentricity can be produced via close encounters or secular perturbations. In both cases, the presence of yet-to-be-discovered trans-Plutonian planets is required. Recent observational evidence cannot… 

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