 Lightcurve analysis gave a well-defined rotation period of 10.80 and 10.98 hours and a brightness variation of 0.31 and 0.26 magnitude, respectively ().A third, concurring period of 11.013 hours with an amplitude of 0.26 magnitude was obtained by French amateur astronomer René Roy in February 2005 ().According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, "Rusthawelia" measures between 68.67 and 82.23 kilometers in diameter and its surface has an albedo between 0.029 and 0.04.