An Estimate of Eros's Porosity and Implications for Internal Structure

Details An Estimate of Eros's Porosity and Implications for Internal Structure An Estimate of Eros's Porosity and Implications for Internal Structure

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002icar..155...94w&link_type=abstract

Icarus, Volume 155, pp. 94-103 (2002).

Astronomy and Astrophysics

Astrophysics

23

Scientific paper

Earth-based spectral measurements and NEAR Shoemaker magnetometer, X-ray, and near-infrared spectrometer data are all consistent with Eros having a bulk composition and mineralogy similar to ordinary chondrite meteorites (OC). By comparing the bulk density of 433 Eros (2.67+/-0.03 g/cm3) with that of OCs (3.40 g/cm3), we estimate the total porosity of the asteroid to be 21-33%. Macro (or structural) porosity, best estimated to be ~20%, is constrained to be between 6 and 33%. We conclude that Eros is a heavily fractured body, but we find no evidence that it was ever catastrophically disrupted and reaccumulated into a rubble pile. .

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