 In both the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), "Hildrun" is an X-type asteroid.In May 2004, a rotational lightcurve of "Hildrun" was obtained from photometric observations by Brian Warner at the Palmer Divide Observatory in Colorado.Lightcurve analysis gave a rotation period of hours with a brightness variation of magnitude ().