In the course of our survey of the outer halo of the Andromeda Galaxy we have discovered a remote , possible satellite of that system at a projected 162 kpc ( 11 \fdg 7 ) radius . The fairly elongated ( 0.31 \pm 0.09 ellipticity ) dwarf can be fit with a King profile of 1.07 kpc ( d /784 kpc ) limiting radius , where the satellite distance , d , is estimated at \sim 630 - 850 kpc from the tip of the red giant branch . The newfound galaxy , “ Andromeda XIV ” ( “ AndXIV ” ) , distinguishes itself from other Local Group galaxies by its extreme dynamics : Keck/DEIMOS spectroscopy reveals it to have a large heliocentric radial velocity ( -481 km s ^ { -1 } ) , or -206 km s ^ { -1 } velocity relative to M31 . Even at its projected radius AndXIV already is at the M31 escape velocity based on the latest M31 mass models . If AndXIV is bound to M31 , then recent models with reduced M31 virial masses need revision upward . If not bound to M31 , then AndXIV is just now falling into the Local Group for the first time and represents a dwarf galaxy that formed and spent almost its entire life in isolation .