Guardians of the Stars
Luhman 16 (WISE 1049-5319, WISE J104915.57–531906.1) is a binary brown-dwarf system in the southern constellation Vela at a distance of approximately 6.6 light-years (2.0 pc) from the Sun. They are the closest known brown dwarfs, and the closest system found since the measurement of the proper motion of Barnard’s Star in 1916. The primary is of spectral type L8±1 and the secondary of type T1±2 (and is hence near the L–T transition). Luhman 16 A and B orbit each other at a distance of about 3 AU with an orbital period of approximately 25 years.
The Only Planet in this system is a Massive Solid Core, which is likely a remnant of a gas giant that moved to close to one of the two stars making up this system.