  The investigation of the data for quasi-periodic pulsations observed in the
X-ray spectra of the accreting millisecond pulsar XTEJ 1807-294 allows some
conclusions to be made about its main parameters - mass and angular momentum.
Seven different geodesic models - namely RP, RP1, RP2, TP, TP1, WD and TD are
applied in attempt to assess their ability to describe the properties of the
central neutron star.
