Three-dimensional simulations of the global evolution of asteroid 4 Vesta under two overlapping planet-scale collisions closely reproduce its observed shape; but expected large areas of olivine-rich rocks and pure diogenites are not observed on the surface, possibly implying that the outer ∼100 km is composed mainly of a basaltic crust (eucrites) with ultramafic intrusions (diogenites).
- M. Jutzi
- E. Asphaug
- W. Benz
