501 Urhixidur

Minor Planet
name=501 Urhixidur
discoverer=Max Wolf
discovery_date=January 18, 1903
designations=1903 LB; 1943 FC; 1949 FW; mp|1951 RB|2; 1951 SE; 1955 FB
category=Main belt
epoch=May 10, 2005 (JD 2453500.5)
semimajor=473.885 Gm (3.168 AU)
perihelion=407.035 Gm (2.721 AU)
aphelion=540.736 Gm (3.615 AU)
eccentricity=0.141
period=2059.303 d (5.64 a)
inclination=20.864°
asc_node=357.573°
arg_peri=351.162°
mean_anomaly=207.360°
speed=16.65 km/s
dimensions=77.4 km
mass=4.9×10¹⁷ kg
density=2.0 g/cm³
gravity=0.0216 m/s²
escape_velocity=0.0409 km/s
rotation=0.625 d (15 h) [http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm ¹]
spectral_class=?
abs_mag=8.9
albedo=0.0812 [http://dorothy.as.arizona.edu/DSN/IRAS/IMPS/diamalb.tab ²]
temperature=~157 K

501 Urhixidur is a relatively large (ranked 372nd by IRAS) main belt asteroid. It was discovered by Dr. Maximilian Franz Joseph Cornelius Wolf (1863-1932), at the Königstuhl Observatory in Heidelberg, Germany on January 18, 1903. It is named after a character in Friedrich Theodor Vischer's then-bestseller satirical novel "Auch Einer".