A dark albedo feature about across has been named Olbers in honour of Vesta's discoverer, but it does not appear in elevation maps as a fresh crater would, and its nature is presently unknown, perhaps an old basaltic surface.
A dark reflection trait has been named "Olbers" in honor of Vesta's finding, but it doesn't show in maps as a new crater would, and its kind is not known, maybe an old basaltic surface.