It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.
[4] In May 2010, a first rotational lightcurve of Sicilia was obtained from photometric observations by astronomers at the Oakley Southern Sky Observatory (E09) in Australia.
Lightcurve analysis gave a rotation period of 13.500 hours with a brightness amplitude of 0.19 magnitude (U=3-).
[12] According to the surveys carried out by the Japanese Akari satellite, the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, and the Infrared Astronomical Satellite IRAS, Sicilia measures between 36.83 and 52.529 kilometers in diameter and its surface has an albedo between 0.0369 and 0.07.
[6][8][7][9][10][11] The Collaborative Asteroid Lightcurve Link largely agrees with IRAS and derives an albedo of 0.0470 and a diameter of 44.39 kilometers based on an absolute magnitude of 10.7.