Groombridge 34 is a binary star system located about 11.7 light-years from the Sun. It consists of two red dwarfs in a nearly circular orbit with a separation of about 147 AU. Both stars in this pair exhibit variability due to random flares and they have been given variable star designations. (The brighter member Groombridge 34 A is designated GX And, and the other member is designated GQ And).
In left column are stellar classes of primary members of star systems. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems without known trigonometric parallax.