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Mass-radius relationships in icy satellitesUsing published laboratory data for H2O ice, a modeling technique was developed by which the bulk density, density and temperature profile, rotational moment of inertia, central pressure, and location of the rock-ice interface can all be obtained as a function of the radius, the heliocentric distance, and the silicate composition. Models of the interiors of Callisto, Ganymede, Europa, Rhea, and Titan are given, consistent with present mass and radius data. The radius and mass of spheres of ice under self-gravitation for two different temperature classes are given (103 and 77 deg K). Measurements of mass, radius and I/MR2 by spacecraft can be interpreted by this model to yield substantial information about the internal structure and the ice/rock ratio of the icy satellites of Jupiter and Saturn.
Document ID
19800029788
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lupo, M. J.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lewis, J. S.
(MIT Cambridge, Mass., United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1979
Publication Information
Publication: Icarus
Volume: 40
Subject Category
Lunar And Planetary Exploration
Accession Number
80A13958
Funding Number(s)
CONTRACT_GRANT: NGL-22-009-521
Distribution Limits
Public
Copyright
Other

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