[12] In October 2007, a rotational lightcurve of Beljawskya was obtained by French amateur astronomer Pierre Antonini.
[9] Photometric observations in the R-band at the U.S. Palomar Transient Factory in September 2013, gave a concurring period of 6.285 hours with an amplitude of 0.32 magnitude (U=2).
[10] 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, Beljawskya measures between 39.91 and 52.28 kilometers in diameter, and its surface has an albedo of 0.066 and 0.08 (without preliminary results).
[4][5][6][7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0646 and a diameter of 47.70 kilometers using an absolute magnitude of 10.2.
[3] Proposed by staff members of the discovering Simeis Observatory, this minor planet was named in honor of its discoverer Sergey Ivanovich Belyavsky (1883–1953).