Orbltal Inclinations of INTERCOSMOS 3, 5, 9, 10 and 11 satellites have been analysed passing through β/α - orbital resonances, and the values of the lumped geopotential coefficients of the 14th, 15th, 29th and 30th orders have been computed. These results have been used as a part of the input data for adjustments of the values of the individual harmonic coefficients of the relevant orders, as
constraints for the comprehensive gravity solutions GRIM 3, 3B, 3L1, for the accuracy calibration of older Goddard Earth Models, and for various intercomparisons of the gravity models.