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 and Kecal were all taken by leading members of the "Brandenburgers" cast. A celebrated actor, Jindřich Mošna, was engaged to play the Ringmaster, a role which involves little singing skill. The choice of date proved unfortunate for several reasons. It clashed with a public holiday, and many people had left the city for the country. It was an intensely hot day, which further reduced the number of people prepared to suffer the discomfort of a stuffy theatre. Worse, the threat of an imminent war between Prussia and Austria caused unrest and anxiety in Prague, which dampened public enthusiasm for light