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 parents – Mícha and Háta – arrive, with Kecal. Vašek tells them that he no longer wants to marry Mařenka, having learned her true nature from a beautiful, strange girl. They are horrified ("He does not want her – what has happened?"). Vašek runs off, and moments later Mařenka arrives with her parents. She has just learned of Jeník's deal with Kecal, and a lively ensemble ("No, no, I don't believe it") ensues. Matters are further complicated when Vašek returns, recognises Mařenka as his "strange girl", and says that he will happily marry her. In the sextet which follows ("Make