The orbits of the satellites of Mars determined from earth-based and spacecraft observations

Details The orbits of the satellites of Mars determined from earth-based and spacecraft observations The orbits of the satellites of Mars determined from earth-based and spacecraft observations

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220..321s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 321-328.

Astronomy and Astrophysics

Astronomy

27

Deimos, Phobos, Satellite Observation, Space Observations (From Earth), Mariner 9 Space Probe, Seeing (Astronomy), Viking Spacecraft, Mars, Satellites, Orbits, Earth-Based Observations, Orbital Elements, Spacecraft Observations, Phobos, Deimos, Astronomy, Geometry, Diagrams, Calculations, Mass, Gravity Fields, Physical Properties

Scientific paper

All available positional observations of the satellites of Mars, both earth-based and from the Mariner 9 and Viking spacecraft, have been used for a re-determination of orbits of the satellites. The method used makes a direct solution for various physical parameters of Mars: the mass, low-order gravity field coefficients and precession rate. Reasonably well-determined values are obtained for these parameters. The secular acceleration of Phobos is well-determined from these data, and implies a future lifetime of about 40 million years.

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