Masses of the Galilean satellites of Jupiter

Details Masses of the Galilean satellites of Jupiter Masses of the Galilean satellites of Jupiter

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sci...192.1127f&link_type=abstract

Science, vol. 192, June 11, 1976, p. 1127, 1128. Conselho Nacional de Pesquisas of Brazil

Physics

1

Europa, Io, Jupiter (Planet), Natural Satellites, Planetary Gravitation, Planetary Mass, Doppler Effect, Free Vibration, Pioneer Space Probes

Scientific paper

The masses of the Galilean satellites of Jupiter (Io, Europa, Ganymede, and Callisto) and the Jupiter gravity harmonics J2 and J4 derived at the Jet Propulsion Laboratory (JPL) from the paths of Pioneer 10 and 11 are compared with results obtained by the classical approaches of Sampson (1921) and De Sitter (1931) using the new JPL system of physical parameters. The mass of Callisto found by Sampson is significantly smaller than that derived from the Pioneer 10 and 11 observations. It is not possible to fit the coefficient of free oscillation in the longitude of Ganymede, whose argument is the mean longitude of Ganymede referred to the proper apside of Callisto, and the mass of Callisto derived from the paths of Pioneer 10 and 11. This result can be extended to theories of the same order as Sampson's theory.

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