Abstract
The Voyager images have shown that Mimas and Enceladus have “regular” shapes, with topography of the order of 1% of the diameter. Therefore, we can compare the global shapes of these satellites with the corresponding figures of gravitational equilibrium. In the case of Mimas, this comparison rules out a homogeneous interior, but implies the existence of a denser, presumably rocky core within this small icy satellite.
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Farinella, P., Milani, A., Nobili, A.M. et al. The shape and structure of Mimas. Earth Moon Planet 30, 39–42 (1984). https://doi.org/10.1007/BF00118089
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DOI: https://doi.org/10.1007/BF00118089