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COMBINED EFFECTS OF OBLATENESS AND RADIATION ON THE NONLINEAR STABILITY OF L4 IN THE RESTRICTED THREE-BODY PROBLEM

The nonlinear stability of the triangular libration point, L4, when both of the primaries are oblate spheroids as well as sources of radiation has been studied. It is found that L4 is stable for all mass ratios in the range of linear stability except for three mass ratios depending upon oblateness coefficients and mass reduction factors.