Resources Around Oppia Crater Photojournal: PIA15663 Source: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA/PSI Published: May 10, 2012 This image from NASA's Dawn mission shows a 3-D, colorized rendering of Oppia Crater near the equator of the giant asteroid Vesta. Oppia is about 21 miles (34 kilometers) across. ENLARGE