 The "Collaborative Asteroid Lightcurve Link" assumes a standard albedo for a stony asteroid of 0.20, and calculates a diameter of 8.97 kilometers based on an absolute magnitude of 12.6.This minor planet was named after Australian geologist George E. Williams who discovered the Acraman crater when he worked for the Broken Hill Proprietary Company in South Australia.The old 90-kilometer impact structure is one of the largest meteorite impact craters known on Earth and the largest one on the Australian continent.