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 commented that despite the colour and vigour of the music, there is little by way of characterisation, except in the cases of Kecal and, to a lesser extent, the loving pair and the unfortunate Vašek. The two sets of parents and the various circus folk are all conventional and "penny-plain" figures. In contrast, Kecal's character – that of a self-important, pig-headed, loquacious bungler – is instantly established by his rapid-patter music. Large suggests that the character may have been modelled on that of the boastful Baron in Cimarosa's opera "Il matrimonio segreto". Mařenka's temperament is shown in vocal flourishes which