Equilibrium figures of inhomogeneous synchronous binary asteroids

Details Equilibrium figures of inhomogeneous synchronous binary asteroids Equilibrium figures of inhomogeneous synchronous binary asteroids

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010icar..207..758d&link_type=abstract

Icarus, Volume 207, Issue 2, p. 758-768.

Mathematics

Logic

1

Scientific paper

The present paper deals with the application of the classical theory of equilibrium figures of two rotating liquid masses to the case where bodies exhibit a radially stratified internal density distribution so that they can be considered as inhomogeneous bodies. The derived ellipsoidal shape solutions are applied to five real systems of equal-sized synchronous asteroids. Furthermore, internal inhomogeneity puts strong constraints on the surface grain density. A satisfactory model fit is achieved with internal densities of asteroids steadily increasing outwards. In particular, from such an approach we derived grain densities of the considered systems in agreement with their mineralogical composition inferred from reflectance spectroscopy. According to this new approach, 4492 Debussy, presently of unknown spectral type, is predicted to appear as a C-type object with a grain density on the order of 2 g/cm3.

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