312 Pierretta
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Discovery
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| Discovered by | Auguste Charlois |
| Discovery date | August 28, 1891 |
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Designations
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| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 483.265 Gm (3.23 AU) |
| Perihelion | 348.412 Gm (2.329 AU) |
| Semi-major axis | 415.839 Gm (2.78 AU) |
| Eccentricity | 0.162 |
| Orbital period | 1692.738 d (4.63 a) |
| Average orbital speed | 17.86 km/s |
| Mean anomaly | 232.351° |
| Inclination | 9.041° |
| Longitude of ascending node | 6.764° |
| Argument of perihelion | 260.598° |
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Physical characteristics
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| Dimensions | 50.0 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) | 8.89 |
312 Pierretta is a Main belt asteroid.
It was discovered by Auguste Charlois on August 28, 1891 in Nice.
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