The shapes of small satellites

Details The shapes of small satellites The shapes of small satellites

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...77..248t&link_type=abstract

Icarus (ISSN 0019-1035), vol. 77, Feb. 1989, pt. 1, p. 248-274.

Physics

53

Jupiter Satellites, Mars Satellites, Planetology, Satellite Configurations, Saturn Satellites, Uranus Satellites, Craters, Ellipsoids, Light Curve, Topography, Planets, Shape, Satellites, Size, Mars, Jupiter, Saturn, Uranus, Janus, Spacecraft Observations, Models, Phobos, Deimos, Comparisons, Pandora, Icy Bodies, Roughness, Techniques, Amalthea, Hyperion, Epimetheus, Puck, Structure, Deformation, Collisions, Cratering, Spallation, Prometheus, Epimetheus, Calypso, Hyperion, Photographs, Diagrams, Accretion,

Scientific paper

Limb coordinates from spacecraft images have been used to measure the shapes of the small satellites of Mars, Jupiter, Saturn, and Uranus, with a view to the quantitative testing of those shapes' physical significance. A comparison of eight small satellites' ellipsoidal models with equilibrium ellipsoids indicates that the shapes of even moderately irregular satellites are poor predictors of mean densities; icy satellites smaller than about 150 km in mean radius are irregularly shaped, and exhibit no trend in roughness. Larger icy satellites are ellipsoidal, and rocky satellites with mean radius in the 6-110 km range are also irregularly shaped.

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