10µ radiometric data collected from Kitt Peak in 1975 gave a first diameter estimate of 209 km. According to the space-based surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, as well as observations by the Keck Observatory and photometric modeling, Camilla measures between 185 and 247 kilometers in diameter and its surface has an albedo between 0.160 and 0.294.