3.10 0.100 15 Eunomia 1851 272 2.64 0.185 87 Sylvia 1866 271 3.49 0.083 16 Psyche 1852 264 2.92 0.134 _______________________________________________________________________________ Reference: Cox-317 . Notes Ceres is actually oblate because of the centrifugal force caused by its relatively fast rotation with period of about 9 hours ( La-151 ). From precise