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 in a rousing drinking song ("To beer!"), while Jeník and Kecal argue the merits, respectively, of love and money over beer. The women enter, and the whole group joins in dancing a furiant. Away from the jollity the nervous Vašek muses over his forthcoming marriage in a stuttering song ("My-my-my mother said to me"). Mařenka appears, and guesses immediately who he is, but does not reveal her own identity. Pretending to be someone else, she paints a picture of "Mařenka" as a treacherous deceiver. Vašek is easily fooled, and when Mařenka, in her false guise, pretends to woo him ("I