Scientists from The University of Montreal scientist believe that the body may in fact be a brown dwarf, a supposed "failed star." Anyway, it displays that planets can form farther away from their parent stars than previously supposed. Moreover, the discovery specifies that some planets may not form in the protoplanetary disk, and we still have much to study about brown dwarfs (if that's really what it is).
Detecting a planet does not openly allow defining its mass. As a substitute, scientists use theoretical models of planetary evolution to conclude its features. The light spectrum of GU Psc b acquired from the Gemini North Telescope in Hawaii was equated to such models to demonstrate that it has a temperature of about 800°C. Knowing the oldness of GU Psc due to its position in AB Doradus, the team was able to conclude its mass, which is 9-13 times that of Gas Giant Jupiter.
This planet evidently can't host life assumed its temperature, but it could host a hypothetically habitable moon. As noted by the scientists, though, life-bearing situations wouldn't last long since the planet is freezing rapidly as it ages.
Read the whole Published Paper here