Guardians of the Stars
Teegarden’s Star (SO J025300.5+165258, 2MASS J02530084+1652532, LSPM J0253+1652) is an M-type brown dwarf in the constellation Aries, located about 12 light years from the Solar System. Despite its proximity to Earth it is a dim magnitude 15 and can only be seen through large telescopes.
Teegarden’s Star was originally identified as a red dwarf star but measurements made since its discovery make it more likely to be a brown dwarf star with a mass less than 0.08 that of the Sun. The inherent low temperatures of such objects explain why it was not discovered earlier, since it has an apparent magnitude of only 15.4 (and an absolute magnitude of 17.47). Like most red and brown dwarf stars it emits most of its energy in the infrared spectrum.
An asteroid belt, a iron planet, another asteroid belt, and two ice planets exist in this system.