Computer Science
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...80..326s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 80, Aug. 1989, p. 326-333.
Computer Science
52
Ceres Asteroid, Mars (Planet), Orbital Mechanics, Perturbation Theory, Planet Ephemerides, Vesta Asteroid, Least Squares Method, Mass, Stellar Orbits, Asteroids, Mass, Ceres, Pallas, Vesta, Perturbations, Orbits, Mars, Ephemerides, Earth-Based Observations, Spacecraft Observations, Parameters, Comparisons
Scientific paper
Measurements of Mars-orbit perturbations have been conducted in order to estimate the masses of the Ceres, Pallas, and Vesta asteroids. A full, least-squares adjustment of all ephemeris parameters, including the relevant asteroid masses, is compiled on the basis of observational data encompassing the highly accurate Viking Lander ranging data. The mass for Ceres, of 5.0 + or - 0.2 x 10 to the -10th solar masses, that for Pallas, of 1.4 + or - 0.2 x 10 to the -10th solar masses, and that for Vesta, of 1.5 + or - 0.3 x 10 to the -10th solar masses, respectively represent 15, 30, and 9 percent increases over Schubart's (1970, 1974, 1975) previous determinations.
Hellings Ronald W.
Standish Miles E.
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