About GL Gl 431.1B
GL Gl 431.1B is an uncommon star. It lies about 89.8 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 7.1 and has spectral type G3 V.
It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.