[en] The possibility of calculating the intercepts α(0) of Regge trajectories of heavy quarkonia is investigated in the framework of the quark potential model. On the basis of an analysis of a relativistic quasipotential equation with the Cornell potential and the use of a two-point Pade approximant, a simple interpolation formula is obtained for the square of the quarkonium mass, which describes equally well the mass spectra of heavy and light quarkonia. An analytic expression is obtained for the Regge trajectories of quarkonia. The intercepts and slopes of the trajectories of charmonium and bottomonium are estimated. 38 refs., 2 figs., 1 tab