The dynamical flattenings of Mercury and Venus

Details The dynamical flattenings of Mercury and Venus The dynamical flattenings of Mercury and Venus

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988em%26p...41..289s&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 41, June 1988, p. 289-294.

Physics

7

Density Distribution, Mercury (Planet), Orbital Resonances (Celestial Mechanics), Planetary Rotation, Venus (Planet), Flattening, Moments Of Inertia, Spin Dynamics

Scientific paper

The method which is used to calculate the dynamical flattenings (C-1/2(A+B))/C of the Earth and Moon meets with difficulties when it applies to Mercury and Venus. In this paper, after the calculation of the dimensionless moment of inertia C/MR2 by solving the Emden equation, the effectiveness of the method deriving dynamical flattening from the observed value of the Mercury's obliquity θ is analysed based on the resonance rotation theory. Some suggestions are made for the future space explorations. Finally, the ranges of dynamical flattening and of the obliquity of Venus are calculated.

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