238 Hypatia
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Discovery
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| Discovered by | Viktor Knorre |
| Discovery date | July 1, 1884 |
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Designations
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| Alternative names | 1947 HA |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 473.399 Gm (3.164 AU) |
| Perihelion | 396.128 Gm (2.648 AU) |
| Semi-major axis | 434.763 Gm (2.906 AU) |
| Eccentricity | 0.089 |
| Orbital period | 1809.596 d (4.95 a) |
| Average orbital speed | 17.47 km/s |
| Mean anomaly | 59.101° |
| Inclination | 12.408° |
| Longitude of ascending node | 184.2° |
| Argument of perihelion | 206.935° |
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Physical characteristics
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| Dimensions | 149.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 8.86 h |
| Albedo | 0.042 |
| Temperature | unknown |
| Spectral type | C |
| Absolute magnitude | 8.18 |
238 Hypatia is a very large Main belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material. Like many asteroids of this type, its surface is very dark in colour.
It was discovered by Viktor Knorre on July 1, 1884 in Berlin. It was third of his total of four asteroid discoveries.
The name was given in honour of philosopher Hypatia of Alexandria.
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
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