The total potential of the gravitational force, light pressure force and centrifugal force is equal If q = 1 then we can get from (16) the equation of the classical three body problem. The case q 0, but v = 0 (it may take place in the limit when c -> <») is correspond to the problem which was first studied by V. V. Radzievsky [5], Equation (16) in the two- dimensional problem have been given by D. W. Schuerman [6], Libration points System (16) has no Jacobi integral. Nevertheless we can find the partial solution which correspond to an equilibrium case. We must only make the right parts of (16) equal to zero and find the solution of the new system: We can make z = 0 to satisfy the third equation. Then the simultaneous solution of the first and the second ones let us find the coordinates of the librations points which lie in the plane XOY. We can easily find the solution numerically by iteration. It is convenient to take the results of Radzievsky [5] as the original approximation. The original approximation [5] are shown in second column of table 1, and our solution are given in the third and fourth columns of this table. We used the following values of the parameters:
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