 According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, "Belgica" measures 9.78 and 10.406 kilometers in diameter and its surface has an albedo of 0.301 and 0.273, respectively, while the "Collaborative Asteroid Lightcurve Link" assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 10.94 kilometers with an absolute magnitude of 12.17.This agrees with the estimated diameter of kilometers by Franco et al.This minor planet was named in honor of the state of Belgium.