 According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, "Belopolskya" measures 71.60 and 79.83 kilometers in diameter, and its surface has an albedo of 0.0348 and 0.028, respectively.The "Collaborative Asteroid Lightcurve Link" adopts the shorter diameter obtained by IRAS.A rotational lightcurve of "Belopolskya", obtained by Italian amateur astronomer Silvano Casulli in July 2010, gave a rotation period of 9.44 hours with a brightness variation of 0.14 magnitude ().