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Some Differences Between Geometrical and Dynamical Figures of the Moon

Published online by Cambridge University Press:  07 February 2017

I. V. Gavrilov
I. V. Gavrilov*
Affiliation:
The Main Astronomical Observatory of the Ukrainian Academy of Sciences, Kiev, U.S.S.R.

Abstract

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The geometrical shape of the Moon is determined from measurements of absolute heights of the lunar surface, while its dynamical shape is described by means of the Moon's gravity field parameters. All these data are derived from observations of the lunar artificial satellites (‘Luna-10’, ‘Orbiters 1-4’) and astronomical measurements.

In the paper differences of the lunar geometrical and dynamical figures are analysed. It is shown, that the homogeneous model of the Moon is not capable of explaining these differences. It is found, that the lunar centre of gravity situated about 0.9 km to the north, and 1.1 km nearer to the Earth, than the centre of its geometrical figure.

Type
Part II: Scientific Papers
Information
Symposium - International Astronomical Union , Volume 47: The Moon , 1972 , pp. 32 - 34
Copyright
Copyright © Reidel 1972 

References

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5. Arthur, D. W. G.: 1966, Comm. LPL 5, 75.Google Scholar