toobfreak
Tungsten/Glass Member
Neptune is the outermost planet. Pluto is actually an unusually large rogue dwarf planet that was found mainly because it is large for its class and its orbit occasionally passes inside Neptune. But while scientists have found many other dwarf planets (KBOs or Kuiper Belt Objects), they just found another where they never expected to find one--- over 400 miles across and beyond the orbit of Neptune, to usually FAR beyond the orbit of Neptune.
www.newsweek.com
This thing is likely a captured intergalactic wanderer.

Astronomers think they've discovered a new dwarf planet in our solar system
The revelation means that the 'empty' space beyond Neptune may not be as empty as astronomers had thought.

This thing is likely a captured intergalactic wanderer.