Top: origin of the injected TNOs in the unperturbed disk of 300 au in size. The disk has a color gradient from reddish to grayish corresponding to the color of planetesimals. The patches represent the feeding zones or origin of the injected TNOs. The color bar gives the inclination of the injected TNOs; blue represents prograde objects and red represents retrograde objects. Bottom: distribution of periastron distance of the ejected particles just before becoming unbound for the prograde (blue), retrograde (red), and total population (gray).