as of 2016, "bydžovský"s size, albedo, composition and rotation period remain unknown. based on its absolute magnitude of 11.4, its diameter is estimated to measure between 13 and 32 kilometers, assuming an albedo in the range of 0.05 to 0.25. since most asteroids in the outer main-belt are of a carbonaceous rather than of a silicaceous composition, with low albedos, typically closer to 0.05 than to 0.25, the asteroid's diameter might be on the upper end of nasa's published conversion table, as the lower the reflectivity (albedo), the larger the body's diameter for a given absolute magnitude.