Abstract
The Galileo-determined moment-of-inertia factor for Callisto of 0.406 ± 0.039 (1σ) 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 ≈0.45, close to the theoretically predicted value of ≈0.40.
| Original language | English |
|---|---|
| Pages (from-to) | 540-543 |
| Number of pages | 4 |
| Journal | Icarus |
| Volume | 130 |
| Issue number | 2 |
| DOIs | |
| State | Published - Dec 1997 |