The planet orbits its host star, or brown dwarf, with an orbital radius similar to that of Venus.

BBC: Tiniest extrasolar planet found

If the new object were a captured alien, it could give astronomers their first good look at an extra-solar planet, or a brown dwarf if that is what it turns out to be.

ECONOMIST: X marks the spot

Mr. MIKE BROWN (California Institute of Technology): The largest dwarf planet, please.

NPR: Pluto, the Un-Planet?