Information from A. Harris as of 1 March 2001 indicates that 151 Abundantia is an S class (stony) asteroid with a diameter of 45.37 km and H = 9.24 .1728 andalbedo of 0.03. The light curve collected over 6 nights from 2/16/2002 to 3/10/2002 confirmed the rotational period to be 19.718h.[citation needed]
Data from 2001 shows a diameter of 45.37 km.[7] Anoccultation by the asteroid was observed on 10 December 2017, showing the asteroid to be highly elongated, with dimensions of roughly 24 x 52 km.[citation needed]