312 Pierretta
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| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery date | August 28, 1891 |
| Alternate designations B |
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| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.162 |
| Semi-major axis (a) | 415.839 Gm (2.78 AU) |
| Perihelion (q) | 348.412 Gm (2.329 AU) |
| Aphelion (Q) | 483.265 Gm (3.23 AU) |
| Orbital period (P) | 1692.738 d (4.63 a) |
| Mean orbital speed | 17.86 km/s |
| Inclination (i) | 9.041° |
| Longitude of the ascending node (Ω) |
6.764° |
| Argument of perihelion (ω) |
260.598° |
| Mean anomaly (M) | 232.351° |
| Physical characteristics D | |
| Dimensions | 50.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Spectral class | unknown |
| Absolute magnitude | 8.89 |
| Albedo (geometric) | unknown |
| Mean surface temperature |
unknown |
312 Pierretta is a Main belt asteroid.
It was discovered by Auguste Charlois on August 28, 1891 in Nice.
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