Named in honor of Roy Scott Dunbar, physicist and planetary scientist at the Jet Propulsion Laboratory. The discoverers wish to acknowledge his dedicated commitment and participation in the Palomar planet-crossing asteroid search, which included his own discovery of the Aten-type asteroid (3362) Khufu. His dissertation on the stability of Trojan-type librations in the Earth-Sun system led to an Earth-Trojan search program at Palomar. (M 12976) _ _.