1911 Schubart, provisional designation 1973 UD, is an outer main-belt asteroid discovered on October 25, 1973 by Paul Wild at Zimmerwald Observatory, near Bern, Switzerland. With an diameter of 80 kilometers, it is one of the largest members of the Hilda family asteroids, which are in 3:2 orbital resonance with the gas-giant Jupiter. It is also the largest and name-giving body of the Schubart family, a collisional subgroup with related orbits, believed to have originated from a previously existing, larger asteroid (also see Asteroid family). It is the darkest P-type asteroid with a very low geometric albedo of 0.0249.