501 Urhixidur
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| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | January 18, 1903 |
| Designations | |
| Alternative names |
1903 LB; 1943 FC; 1949 FW; 1951 RB2; 1951 SE; 1955 FB |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch May 10, 2005 (JD 2453500.5) | |
| Aphelion | 540.736 Gm (3.615 AU) |
| Perihelion | 407.035 Gm (2.721 AU) |
| Semi-major axis | 473.885 Gm (3.168 AU) |
| Eccentricity | 0.141 |
| Orbital period | 2059.303 d (5.64 a) |
| Average orbital speed | 16.65 km/s |
| Mean anomaly | 207.360° |
| Inclination | 20.864° |
| Longitude of ascending node | 357.573° |
| Argument of perihelion | 351.162° |
| Physical characteristics | |
| Dimensions | 77.4 km |
| Mass | 4.9×1017 kg |
| Mean density | 2.0 g/cm³ |
| Equatorial surface gravity | 0.0216 m/s² |
| Escape velocity | 0.0409 km/s |
| Rotation period | 0.625 d (15 h) 1 |
| Albedo | 0.0812 2 |
| Temperature | ~157 K |
| Spectral type | ? |
| Absolute magnitude (H) | 8.9 |
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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.
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