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Forming Massive Terrestrial Satellites through Binary-Exchange Encounters

Presentation #310.03 in the session Dynamical Dances in Space.

Published onOct 20, 2022
Forming Massive Terrestrial Satellites through Binary-Exchange Encounters

The number of satellites in the inner Solar System are few, as are the number of textbook mentions of how they might form. Here we consider the process of collision-less “binary-exchange” and show that massive satellites in the range 0.01 – 0.1 Earth-masses can form around terrestrial planets in a way already demonstrated for giant planets both in the Solar System and beyond. Attention is specifically given to capturing masses around an ‘earth’ from an assortment of hypothetical encounters with binary terrestrial objects (BTOs) that may exist (or have existed) in the nascent systems of solar-type stars.

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