( IAU Minor Planet Center: Provisional Designations ). _______________________________________________________________________________ Largest Asteroids _______________________________________________________________________________ No. Name Year of Mean Semi-Major Eccentricity Discovery Diameter Axis (km) (AU) 1 Ceres 1801 913 2.77 0.078 2 Pallas 1802 523 2.77 0.234 4 Vesta 1807 501 2.36 0.091 10 Hygiea 1849 429 3.14 0.120 511 Davida 1903