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Knowledge of Saturn's axial moment of inertia can provide valuableinformation on its internal structure. We suggest that Saturn's angularmomentum may be determined by the Solstice Mission (Cassini XXM) by measuringSaturn's pole precession rate and the Lense-Thirring acceleration on thespacecraft, and therefore, put constraints on Saturn's moment of inertia. It isshown that Saturn's moment of inertia can change up to ~2% due to differentcore properties. However, a determination of Saturn's rotation rate is requiredto constrain its axial moment of inertia. A change of about seven minutes inrotation period leads to a similar uncertainty in the moment of inertia valueas different core properties (mass, radius). A determination of Saturn'sangular momentum and rotation period by the Solstice Mission could revealimportant information on Saturn's internal structure, in particular, its coreproperties.

Constraining Saturn's Core Properties by a Measurement of Its Moment of Inertia - Implications to the Cassini Solstice Mission