Number of particles in the system after a late impact when Didymos is near its perihelion (left) and aphelion (right). The colour bars represent the number of particles in a specific distance range from the Didymos barycentre (r). Almost all particles are removed after 15 (perihelion case) or 30 days (aphelion), and the close proximity of Didymos is free of particles after 5–10 days.