Given the distances involved, anything that may have had its orbit altered by this event is extremely unlikely to have struck any solid surface in our system already. It may, however, lead to some additional bombardment a few million years from now.
By that time, we might have computers of sufficient power working from an astronomical catalog of sufficient completeness to reverse-propagate the catalog far enough to actually blame the passing stars for kicking out comets in our direction.
By that time, we might have computers of sufficient power working from an astronomical catalog of sufficient completeness to reverse-propagate the catalog far enough to actually blame the passing stars for kicking out comets in our direction.