Galactic distribution of asteroids 1 Gyr after the Sun escapes its birth cluster (still ~ 3.6 Gyr in the past). The colored background represents the adopted Galaxy potential: bottom left, top left, and bottom right views show the various Cartesian coordinates (the bar is not shown). The red and green dots show the bound and unbound asteroids. The starting position of the Sun is also indicated. The top-right corner panel shows a magnified view of 6 pc by 6 pc around the Sun. The outer circle shows the Hill radius at ~ 0.65 pc, and the inner circle represents the inner edge of the Oort cloud at about ~ 0.21 pc (at δv = 10⁻³).