524 Fidelio

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.^[2] The name dates from a period when Max Wolf assigned the names of female operatic characters to asteroids he had newly discovered.

524 Fidelio

Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	14 March 1904
Designations
MPC designation	(524) Fidelio
Alternative designations	1904 NN
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	112.10 yr (40943 d)
Aphelion	2.9726 AU (444.69 Gm)
Perihelion	2.2965 AU (343.55 Gm)
Semi-major axis	2.6345 AU (394.12 Gm)
Eccentricity	0.12832
Orbital period (sidereal)	4.28 yr (1561.9 d)
Mean anomaly	195.412°
Mean motion	0° 13m 49.764s / day
Inclination	8.2284°
Longitude of ascending node	326.697°
Argument of perihelion	80.137°
Physical characteristics
Mean radius	35.865±1.35 km
Synodic rotation period	14.198 h (0.5916 d)
Geometric albedo	0.0402±0.003
Absolute magnitude (H)	9.83

524 Fidelio is also the name of a song on the album Valentina by The Wedding Present.