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Science 11 June 1976:
Vol. 192. no. 4244, pp. 1127 - 1128
DOI: 10.1126/science.192.4244.1127
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Articles

Masses of the Galilean Satellites of Jupiter

S. FERRAZ-MELLO 1

1 Universidade de Samacro Paulo, Instituto Astronômico e Geofísico, Samacro Paulo, Brazil

Numerical data derived from the observation of the four great satellites of Jupiter are compared with the values obtained through Sampson's theory by using the new JPL (Jet Propulsion Laboratory) system of masses. It is not possible to fit the coefficient of the free oscillation in the longitude of Ganymede, whose argument is l3 - ohgr4 (the mean longitude of Ganymede referred to the proper apse of Callisto), and the mass of Callisto derived from the path of Pioneer 10.

Submitted on December 9, 1975
Revised on February 17, 1976

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Science. ISSN 0036-8075 (print), 1095-9203 (online)