Science Fair Project Encyclopedia
54 Alexandra
| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.713 AU |
| Perihelion distance | 2.180 AU |
| Aphelion distance | 3.247 AU |
| Orbital period | 4.47 years |
| Inclination | 11.81° |
| Eccentricity | 0.196 |
| Physical characteristics 1 | |
| Diameter | 165.8 km |
| Rotation period 3 | 7.024 hours |
| Spectral class | C |
| Abs. magnitude | 7.66 |
| Albedo 4 | 0.056 |
| History 2 | |
| Discoverer | H. Goldschmidt, 1858 |
54 Alexandra is a very large and dark main belt asteroid.
It was discovered by H. Goldschmidt on September 10, 1858 and named after the German explorer Alexander von Humboldt.
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10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details