The lunar mean moment of inertia and the size of the moon's core

Details The lunar mean moment of inertia and the size of the moon's core The lunar mean moment of inertia and the size of the moon's core

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988em%26p...42..179z&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 42, Aug. 1988, p. 179-184.

Astronomy and Astrophysics

Astronomy

4

Lunar Core, Lunar Mantle, Moments Of Inertia, Roche Limit, Density Distribution, Lunar Gravitational Effects

Scientific paper

A two-layer moon model is used to examine the relation between the uncertainty of the moon's mean moment of inertia, delta(I/Ma-squared), and that of the core density. The model involves a mantle, which obeys Roche's law for the density distribution, and a homogeneous Fe or Fe-FeS core. For a delta(I/Ma-squared) uncertainty of 0.0023, a core radius of 450 km is consistent with the core density limitation of about 1 g/cu cm. The results suggest that the ratio of the mass of the moon to that of the earth in the IAU (1976) system of astronomical constants will become a deducible constant.

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