Is Titan in hydrostatic equilibrium?

Details Is Titan in hydrostatic equilibrium? Is Titan in hydrostatic equilibrium?

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..344m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.344

Physics

Scientific paper

The observed ratio of the degree-2 gravity coefficients of Titan, J2/C22 10/3, is consistent with a degree-2 gravity field and moments of inertia dominated by hydrostatic rotational and tidal deformation. We consider the effect of non-hydrostatic contributions to validate the significance of this ratio. We illustrate that the observed ratio is also consistent with a degree-2 gravity field and moments of inertia dominated by fossil figure and/or mass anomaly contributions. However, a dominant fossil figure contribution is unlikely since the expected orbital migration is small, and a dominant mass anomaly contribution can be rule out given the observed power spectrum of the gravity field.

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