We used the new observational error model to recalculate the orbits of the 300 large asteroids that appeared in the JPL DE405 planetary ephemeris due to their potential perturbations of the orbits of the major planets (Standish 1998). These newly recalculated epoch state vectors were then integrated over the timespan 1800–2200, with mutual perturbations modeled using the best available published and estimated masses of the 300 asteroids. The resulting BC430 asteroid ephemeris are presented here.