Gravity fields of the solar system

Details Gravity fields of the solar system Gravity fields of the solar system

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975svdc.rept.....z&link_type=abstract

NASA Space Vehicle Design Criteria (Environment) National Aeronautics and Space Administration. Goddard Space Flight Center, Gre

Other

Gravitational Fields, Planetary Gravitation, Astronomical Models, Ellipsoids, Harmonic Analysis, Oblate Spheroids, Point Sources, Solar System

Scientific paper

The most frequently used formulations of the gravitational field are discussed and a standard set of models for the gravity fields of the earth, moon, sun, and other massive bodies in the solar system are defined. The formulas are presented in standard forms, some with instructions for conversion. A point-source or inverse-square model, which represents the external potential of a spherically symmetrical mass distribution by a mathematical point mass without physical dimensions, is considered. An oblate spheroid model is presented, accompanied by an introduction to zonal harmonics. This spheroid model is generalized and forms the basis for a number of the spherical harmonic models which were developed for the earth and moon. The triaxial ellipsoid model is also presented. These models and their application to space missions are discussed.

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