The study of brown dwarfs is gaining a lot of momentum in astrophysics lately. Brown dwarfs are crucial to our understanding how mass plays an important role in differentiating between a massive planet and a brown dwarf. It has been estimated that brown dwarfs typical comprise from 13 to 75 Jupiter masses, beyond which nuclear fusion of hydrogen into helium occurs making a stellar body. This threshold is still not clearly understood and some brown dwarfs with masses upward of 75 till 90 have been discovered.
Also with a potential to harbor transiting exoplanetary systems, brown dwarfs could be a real fancy item for investigation and discovery..