Fig. 4
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Color-coded clusters generated by the k-means++ algorithm applied to the data set made of 64 Saturnian moons. The figure shows the heliocentric values (a, e, i). The range ini has been restricted to the one relevant to this work. Heliocentric Keplerian orbital elements refer to epoch JD 2459396.5. Source: JPL’s SBDB and Horizons.
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