I was thinking at least two of Jupiter's 150 moons or any big enough asteroid belt objects but Jupiter seems too close to home for comfort. what if some of the remnants of the booming collide with other asteroid belts object and tilt their direction towards earth. So Pluto ,Neptune Uranus are far away enough for this spectacular show.

As for witnessing the event with the naked eye, ovias it wont work given the distance but we can record the events