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The doubly resonant Plutinos

Presentation #202.08 in the session TNO Theory and Physical Properties (Oral Presentation)

Published onOct 23, 2023
The doubly resonant Plutinos

The Plutinos are a prominent dynamical group of Kuiper belt objects that are thought to have been captured in Neptune’s exterior 3:2 mean motion resonance by an outwardly migrating Neptune in the ancient solar system. Like Pluto, some (but not all) Plutinos are doubly resonant, exhibiting an additional libration of their argument of perihelion. Their high fraction, about 20%, is rather surprising considering that the characteristic libration timescale of the second resonance is ~1% that of the mean motion resonance. We will discuss the implications of these results for the nature of the giant planets’ migration.

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