Abstract
This note tackles the problem of the rotation of Io with the 4-degrees of freedom Poincaré-Hough model. Io is modeled as a 2-layer body, i.e. a triaxial fluid core and a rigid outer layer.We show that the longitudinal librations should have an amplitude of about 30. arcsec, independent of the composition of the core. We also estimate the tidal instability of the core, and show that should be slowly unstable. © 2013 Elsevier Inc.
| Translated title of the contribution | The rotation of Io predicted by the Poincaré-Hough model |
|---|---|
| Original language | English |
| Pages (from-to) | 621-624 |
| Number of pages | 4 |
| Journal | Icarus |
| Volume | 223 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Mar 2013 |
Keywords
- Celestial mechanics
- Interiors
- Io
- Resonances, Spin-orbit
- Rotational dynamics