Geodetic Investigations of the Europa Clipper Mission

The Europa Clipper mission will investigate the geophysical properties of Europa, one of Jupiter's Galilean moons, to assess its habitability. Geodetic measurements will play a critical role in determining Europa's internal structure, including the thickness of the ice shell, the presence and extent of a subsurface ocean, and the distribution of mass in the deeper interior. To build the necessary geodetic data set, the Geodesy Focus Group (GFG) coordinates cross-instrument efforts to measure Europa's global shape, rotational parameters, gravity field, and degree-2 tidal Love numbers ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>k</mml:mi> <mml:mn>2</mml:mn></mml:msub> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>h</mml:mi> <mml:mn>2</mml:mn></mml:msub> </mml:math> ). Here we summarize how data from the Gravity/Radio Science (G/RS) investigation, Europa Imaging System (EIS), Radar for Europa Assessment and Sounding (REASON), and Europa Ultraviolet Spectrograph (Europa-UVS) will be used to infer geodetic constraints on the interior structure and to establish a precise cartographic reference system for geophysical and geological interpretation. Together, the resulting geodetic information will contribute to a deeper understanding of Europa's internal dynamics and the potential habitability of its ocean.