Venus: Mass, Gravity Field, Atmosphere, and Ionosphere as Measured by the Mariner 10 Dual-Frequency Radio System

@article{Howard1974VenusMG,
  title={Venus: Mass, Gravity Field, Atmosphere, and Ionosphere as Measured by the Mariner 10 Dual-Frequency Radio System},
  author={H. Taylor Howard and G. Leonard Tyler and Gunnar Fjeldbo and Arvydas J. Kliore and Gerald S. Levy and Dietrich Brunn and Richard M. Dickinson and R. E. Edelson and W. L. Martin and R. B. Postal and Boris L. Seidel and Tadas Sesplaukis and D. Shirley and Charles T. Stelzried and Donald Sweetnam and Arthur I. Zygielbaum and Pasquale Bernard Esposito and J. D. Anderson and Irwin I. Shapiro and Robert D. Reasenberg},
  journal={Science},
  year={1974},
  volume={183},
  pages={1297 - 1301}
}
Analysis of the Doppler tracking data near encounter yields a value for the ratio of the mass of the sun to that of Venus of 408,523.9 � 1.2, which is in good agreement with prior determinations based on data from Mariner 2 and Mariner 5. Preliminary analysis indicates that the magnitudes of the fractional differences in the principal moments of inertia of Venus are no larger than 10-4, given that the effects of gravity-field harmonics higher than the second are negligible. Additional analysis… 

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