Abstract
The Galileo-determined moment-of-inertia factor for Callisto of 0.406
+/- 0.039 (1 sigma) 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/(rock
+ water-ice) mass ratio for Callisto is approximate to 0.45, close
to the theoretically predicted value of approximate to 0.40. (C)
1997 Academic Press.
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