Author/Authors :
Wilkison، نويسنده , , Sarah L. and Robinson، نويسنده , , Mark S. and Thomas، نويسنده , , Peter C. and Veverka، نويسنده , , Joseph and McCoy، نويسنده , , Timothy J. and Murchie، نويسنده , , Scott L. and Prockter، نويسنده , , Louise M. and Yeomans، نويسنده , , Donald K.، نويسنده ,
Abstract :
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.
