Collisions play an important role in influencing the evolution of asteroids.
The history of these collisions is documented in crater distributions observed over the surface of asteroids, which integrate the impact flux it has experienced. This flux depends on the asteroid's orbital and spin-axis evolution, its surface properties, and its impactor population. This study predicts variations in impact flux and hence crater distribution over the surface of asteroids by calculating the directions and magnitudes of impact velocities on objects within the inner solar system. Combining these predictions to observed distributions and morphologies of craters should improve our understanding of the collisonal, orbital and spin axis evolution of asteroids as well as of the structure and populations of the asteroid belt. Previous estimates of impact flux and cratering distributions have been based on the Opik method and extensions of it.