Unseen `planetary mass object` signalled by warped Kuiper Belt
(PHYSorg.com Space & Earth)

An unknown, unseen `planetary mass object` may lurk in the outer reaches of our solar system, according to new research on the orbits of minor planets to be published in the Astronomical Journal. This object would be different from-and much closer than-the so-called Planet Nine, a planet whose existence yet awaits confirmation.