Characterizing the core of Mercury

Details Characterizing the core of Mercury Characterizing the core of Mercury

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1081p&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 081.

Physics

Mercury Surface, Planetary Cores, Conducting Fluids, Planetary Magnetic Fields, Cassini Mission, Mariner 10 Space Probe, Planetary Rotation, Libration, Temperature Distribution

Scientific paper

We review past assertions that the determinations of the four parameters, C20, C22, theta, and phi, are sufficient to determine the size and state of Mercury's core. C20 and C22 are gravitational harmonics, theta is Mercury's obliquity, and phi is the amplitude of the forced, 88-d period libration in longitude. The existence of gravity-assisted spacecraft trajectories to Mercury with modest propulsion systems, and the possibility of determining these parameters with instrumentation on a Mercury-orbiting spacecraft make a reexamination of this proposal particularly relevant.

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