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While today [update] the astronomical community widely agrees that Planet X, as originally envisioned, does not exist, the concept of an as-yet-unobserved planet has been revived by a number of astronomers to explain other anomalies observed in the outer Solar System. [5] As of March 2014, observations with the WISE telescope have ruled out the possibility of a Saturn -sized object (95 Earth mass) out to 10,000 AU , and a Jupiter -sized (≈318 Earth mass) or larger object out to 26,000 AU. [6]

Sedna - O.Sedna - O.Sedna - O.Sedna - O.