The Obliquity of Jupiter

The spin-axis precession period of Jupiter is near that of a fundamental Laplace-Lagrange solar system mode describing the precession of Uranus's orbit plane (64.3 x 10 super(5) yr). As a result, a portion of the 3 1 obliquity of Jupiter may actually be forced by a spin-orbit secular resonance...

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Bibliographic Details
Published in:The Astrophysical journal 2006-03, Vol.640 (1), p.L91-L94
Main Authors: Ward, William R, Canup, Robin M
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
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Summary:The spin-axis precession period of Jupiter is near that of a fundamental Laplace-Lagrange solar system mode describing the precession of Uranus's orbit plane (64.3 x 10 super(5) yr). As a result, a portion of the 3 1 obliquity of Jupiter may actually be forced by a spin-orbit secular resonance with Uranus. If this portion predominates, it allows for a constraint on Jupiter's moment of inertia that is independent of interior models.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/503156