Dynamical stability maps for the main asteroid belt in (a,e,i). The stability is defined as the fraction of test asteroids not escaping in 100 Myr: zero implies that all asteroids have escaped the asteroid belt, and one implies that no asteroids have escaped the asteroid belt (but may have drifted away from the initial location). Test asteroid diameters from top to bottom: 3.0 km, 1.0 km, 0.3 km, and 0.1 km.