 Two tentative lightcurves were obtained by Pierre Antonini in June 2010, and by Robin Esseiva, Nicolas Esseiva and Raoul Behrend in April 2015; both with a period of hours and an amplitude of and magnitude, respectively ().In 2016, a modeled lightcurves using photometric data from various sources, rendered a concurring sidereal period of hours and two spin axes of (247.0°, −29.0°) and (86.0°, −63.0°) in ecliptic coordinates.According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the Japanese Akari satellite, and the Infrared Astronomical Satellite IRAS, "Hildrun" measures (), () and () kilometers in diameter and its surface has an albedo of (), () and (), respectively.