 Other photometric period determinations gave concurring results.According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, "Ulla" measures and kilometers in diameter and its surface has an albedo between and .The "Collaborative Asteroid Lightcurve Link" uses an albedo of 0.0450 and derives a diameter of 116.66 kilometers based on an absolute magnitude of 8.65.