Mars gravity field based on a short-arc technique

Details Mars gravity field based on a short-arc technique Mars gravity field based on a short-arc technique

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.2899s&link_type=abstract

Journal of Geophysical Research, vol. 80, July 10, 1975, p. 2899-2908.

Astronomy and Astrophysics

Astronomy

7

Astronomical Models, Gravitational Fields, Mariner 9 Space Probe, Mars Surface, Planetary Gravitation, Mass Distribution, Orbital Elements, Radio Tracking, Spherical Harmonics, Topography

Scientific paper

The magnitudes of 92 surface mass points at designated locations were estimated from the radio tracking data of the Mariner Mars 1971 (M9) orbiter. This result is the first mass point model of a global field. The derived surface mass distribution correlates positively with the visible topography. The Hellas basin contains a mass deficiency, in contrast to some of the lunar basins which contain mass excesses. The Mars gravity field represented by the four parameters of an optimally located mass point (superimposed on an oblate spheroid) has third- and fourth-degree harmonics comparable to those of the complete model.

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