A new submm source within a few arcseconds of α Centauri: ALMA discovers the most distant object of the solar system
http://arxiv.org/abs/1512.02652The serendipitous discovery of a possible new solar system object with ALMA
http://arxiv.org/abs/1512.02650It could be a 1.5 Earth-radius object 300 AU away, or an extreme TNO pretty far away. Can't be a brown dwarf or WISE would have seen it. Can't be a stellar object or it would have been obvious for a century.
Imho. some healthy skepticism here wouldn't be a bad idea.
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Caps Lock: Cruise control for 'Cool'!