501 Urhixidur
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| Discovery A | |
|---|---|
| Discoverer | Max Wolf |
| Discovery date | January 18, 1903 |
| Alternate designations B |
1903 LB; 1943 FC; 1949 FW; 1951 RB2; 1951 SE; 1955 FB |
| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.141 |
| Semi-major axis (a) | 473.885 Gm (3.168 AU) |
| Perihelion (q) | 407.035 Gm (2.721 AU) |
| Aphelion (Q) | 540.736 Gm (3.615 AU) |
| Orbital period (P) | 2059.303 d (5.64 a) |
| Mean orbital speed | 16.65 km/s |
| Inclination (i) | 20.864° |
| Longitude of the ascending node (Ω) |
357.573° |
| Argument of perihelion (ω) |
351.162° |
| Mean anomaly (M) | 207.360° |
| Physical characteristics D | |
| Dimensions | 77.4 km |
| Mass | 4.9×1017 kg |
| Density | 2.0 g/cm³ |
| Surface gravity | 0.0216 m/s² |
| Escape velocity | 0.0409 km/s |
| Rotation period | 0.625 d (15 h) 1 |
| Spectral class | ? |
| Absolute magnitude | 8.9 |
| Albedo (geometric) | 0.0812 2 |
| Mean surface 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.
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