摘要：The values of the phase integralqwere determined for asteroids using a numerical integration of the brightness phase functions over a wide phase-angle range and the relations betweenqand theGparameter of theHGfunction andqand theG1,G2parameters of theHG1G2function. The phase-integral values for asteroids of different geometric albedo range from 0.34 to 0.54 with an average value of 0.44. These values can be used for the determination of the Bond albedo of asteroids. Estimates for the phase-integral values using theG1andG2parameters are in very good agreement with the available observational data. We recommend using theHG1G2function for the determination of the phase integral. Comparison of the phase integrals of asteroids and planetary satellites shows that asteroids have systematically lower values ofq.
