The Shape of Io from Galileo Limb Measurements (original) (raw)
NASA/ADS
;
- Davies, M. E. ;
- Colvin, T. R. ;
- Oberst, J. ;
- Schuster, P. ;
- Neukum, G. ;
- Carr, M. H. ;
- McEwen, A. ;
- Schubert, G. ;
- Belton, M. J. S. ;
- Galileo Imaging Team
Abstract
Galileo CCD images of the limb of Io provide improved data for determining the shape of this synchronously rotating satellite. The best ellipsoidal fit is within 0.3 km of the best equilibrium fit of 1829.7, 1819.2, 1815.8 km. The shape is consistent with substantial mass concentration in a core and with gravity measurements from tracking of the Galileo spacecraft. The surface of Io is largely plains and isolated peaks, with little long-wavelength topography over 1 km in amplitude.
Publication:
Icarus
Pub Date:
September 1998
DOI:
Bibcode: