2047 Smetana an albedo of 0.544. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 – a compromise value between 0.4 and 0.2, corresponding to the Hungaria asteroids both as family and orbital group – and calculates a diameter of 3.85 kilometers with an absolute magnitude of 14.0. This minor planet was named for the Czech national composer Bedřich Smetana (1824–1884), best known for the opera "The Bartered Bride", the cycle of six symphonic poems "My homeland" and the string quartet "From my life". The approved naming citation was published by the Minor Planet Center before November 1977 (). 2047 Smetana
The Bartered Bride created music considered by Czechs to be quintessentially Czech in spirit. The overture, often played as a concert piece independently from the opera, was, unusually, composed before almost any of the other music had been written. After a performance at the Vienna Music and Theatre Exhibition of 1892, the opera achieved international recognition. It was performed in Chicago in 1893, London in 1895 and reached New York in 1909, subsequently becoming the first, and for many years the only, Czech opera in the general repertory. Many of these early international performances were in German, under the title "Die verkaufte Braut",