 As of 2018, no secure period has been obtained.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, "Lorraine" measures between 62.20 and 80.30 kilometers in diameter and its surface has an albedo between 0.03 and 0.0501.The "Collaborative Asteroid Lightcurve Link" derives an albedo of 0.0457 and a diameter of 62.15 kilometers based on an absolute magnitude of 10.0.