Tags: Planet.
HD 139357 b is a very massive extrasolar planet or brown dwarf located approximately 390 light years away orbiting the 6th magnitude K-type giant star HD 139357 in the constellation of Draco. The detection occurred on March 20 2009 which was the first day of spring.The actual mass and radius of this body remain known but it has a minimum mass of nearly 10 times that of Jupiter and a radius of probably no more than 1.2 times Jupiter’s. Most likely this is a brown dwarf rather than a planet.