On the Lagrange libration points of the perturbed Earth-Moon System

Abstract In this work we discuss the elusive Kordylewski clouds – dust matter in the neighborhood of the Lagrange libration points L 4 , L 5 of the Earth-Moon system. On the base of restricted planar circular four body problem we get some proof for possibility of existence of four such clouds and some rule to predict the optimal moments of time for their observation.