NOTE: Mystery of Callisto: Is It Undifferentiated?

Details NOTE: Mystery of Callisto: Is It Undifferentiated? NOTE: Mystery of Callisto: Is It Undifferentiated?

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997icar..130..540m&link_type=abstract

Icarus, Volume 130, Issue 2, pp. 540-543.

Physics

24

Scientific paper

The Galileo-determined moment-of-inertia factor for Callisto of 0.406 +/- 0.039 (1sigma) is consistent with only a small amount of ice-rock differentiation (<10%), because the moment-of-inertia for a totally undifferentiated Callisto is 0.38 (not 0.40). The apparently high value for the moment-of-inertia may include nonhydrostatic contributions originating in Callisto's lithosphere. The anhydrous rock_solar(rock + water-ice) mass ratio for Callisto is ~0.45, close to the theoretically predicted value of ~0.40.

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