We’re still looking for the elusive body, we think it’s out there, lurking in the Kuiper Belt.
Refresher: The Kuiper Belt is far-far away, at the edge of our solar system, composed of asteroids and some Dwarf Planets. Remember Pluto? Pluto is a Dwarf Planet at the beginning edge of the Kuiper Belt! Think of the asteroid belt only 20 times as wide.