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Constraints on Mimas’ interior from Cassini ISS libration measurements

Charnoz, S.; Lainey, V.; Noyelles, B. +4 more

Like our Moon, the majority of the solar system’s satellites are locked in a 1:1 spin-orbit resonance; on average, these satellites show the same face toward the planet at a constant rotation rate equal to the satellite’s orbital rate. In addition to the uniform rotational motion, physical librations (oscillations about an equilibrium) also occur.…