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Discovery
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| Discovered by | Auguste Charlois |
| Discovery date | August 19, 1890 |
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Designations
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| Named after | Phaethusa |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 386.835 Gm (2.586 AU) |
| Perihelion | 279.972 Gm (1.871 AU) |
| Semi-major axis | 333.403 Gm (2.229 AU) |
| Eccentricity | 0.16 |
| Orbital period | 1215.226 d (3.33 a) |
| Average orbital speed | 19.95 km/s |
| Mean anomaly | 109.085° |
| Inclination | 1.747° |
| Longitude of ascending node | 121.62° |
| Argument of perihelion | 252.171° |
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Physical characteristics
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| Dimensions | 7 - 15 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | unknown |
| Absolute magnitude (H) | 12.62 |
296 Phaëtusa is a small Main belt asteroid.
It was discovered by Auguste Charlois on August 19, 1890 in Nice.
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