Hubble Captures Possible Planetary System

"Astronomers using NASA's Hubble Space Telescope have photographed one of the smallest objects ever seen around a normal star beyond our Sun. Weighing in at 12 times the mass of Jupiter, the object is small enough to be a planet. The conundrum is that it's also large enough to be a brown dwarf, a failed star."

Can a binary system form like that? Perhaps if the stars formed separately and then somehow worked themselves into an orbit... but that would be even more unlikely. I would guess it's a planet, even though I'm stupid about these "is it a planet or a star" questions.

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