524 Fidelio 524 Fidelio Fidelio (minor planet designation: 524 Fidelio) is a large minor planet with a diameter of 71 km, orbiting the Sun near the center of the main asteroid belt. Fidelio contains both metals and carbon (Spectral class XC). Concerning its name, the "Catalogue of Minor Planet Names and Discovery Circumstances" notes, "This is the name of Leonora when disguised as a man in the opera "Fidelio" (composed 1805) by the German composer Ludwig van Beethoven. The name dates from a period when Max Wolf assigned the names of female operatic characters to asteroids he had newly discovered. 524 Fidelio
The Secret (opera) The Secret (opera) The Secret () is a comic opera in three acts by Bedřich Smetana. The libretto was written by Eliška Krásnohorská. The premiere took place on 18 September 1878 at the Nové České Divadlo (New Czech Theatre) in Prague. Krásnohorská proposed the idea for a new opera to Smetana two weeks after the opening of "The Kiss", but kept details of the plot a secret from the composer until July 1877, when a draft outline, drawing on several sources, including "Les femmes et le secret" by La Fontaine, was sent to him. The librettist had set the action