 Lightcurve analysis gave a rotation period of 11.32 hours with a brightness amplitude of 0.35 magnitude ().According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Gellivara" measures between 22.10 and 35.73 kilometers in diameter and its surface has an albedo between 0.0241 and 0.07.The "Collaborative Asteroid Lightcurve Link" agrees with IRAS and derives an albedo of 0.0289 with a diameter of 35.76 kilometers based on an absolute magnitude of 11.7.