 In the SMASS classification, "Geowilliams" is a Sk-subtype that transitions between the common S-type asteroid and the K-type asteroid.The latter spectral type is often found among members of the Eos family.In January 2008, a rotational lightcurve of "Geowilliams" was obtained from photometric observations by Australian amateur astronomer David Higgins at the Hunters Hill Observatory .