 Lightcurve analysis gave a concurring rotation period of 17.56 hours with a brightness variation between 0.27 and 0.36 magnitude ().In 2016, an international study modeled a lightcurve from various data sources with a period of 17.5611 hours and found two spin axis of (86.0°, −65.0°) and (272.0°, −42.0°), respectively, in ecliptic coordinates (λ, β) ().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, "Thomana" measures between 53.28 and 61.34 kilometers in diameter and its surface has an albedo between 0.05 and 0.065.