 These results supersede a fragmentary lightcurve taken by French amateur astronomers Federico Manzini, Laurent Bernasconi and René Roy from August 2004, which gave a period of 15.6 hours ().According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, "Nanna" measures between 31.80 and 37.91 kilometers in diameter and its surface has an albedo of 0.028 and 0.056.The "Collaborative Asteroid Lightcurve Link" derives an albedo of 0.03 and a diameter of 35.06 kilometers with an absolute magnitude of 11.7.