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\section{Introduction}  The question standard picture  of whether or the evolution of substructure in the Universe involves the collapse of dark matter into halos, which may host luminous galaxy. Such halos may exist within the bounds of larger halos; in these cases the galaxies they may host are thought of as satellite galaxies, and their evolution differs substantially from galaxies that are  not satellites are distributed isotropically . in ways not fully understood.  The satellites spatial and kinematic distributions of such galaxies can inform our ideas  of how satellites and  the Milky Way systems in which they are found evolve. Substantial evidence exists that satellite galaxies are not isotropically distributed around their hosts, nor are their velocities isotropic.  Recent observations of M31. Notably, the PANDAS survey discovered evidence of a thin plane of satellites, spanning