The mass of the bottom quark and the strong coupling constant α s are determined from QCD moment sum rules for the Υ system. Two analyses are performed using both the pole mass M b as well as the mass m b in the M S scheme. In the pole-mass scheme large perturbative corrections resulting from coulombic contributions have to be resummed. In the M S scheme this can be avoided by an appropriate choice for the renormalization scale. For the bottom quark mass we obtain M b = 4.60 ± 0.02 GeV and m b (m b ) = 4.13± 0.06 GeV. Our combined result from both determinations for the strong coupling is α s (M Z ) = 0.119 ± 0.008.