357 Ninina
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| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery date | February 11, 1893 |
| Alternate designations B |
1893 J |
| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.073 |
| Semi-major axis (a) | 471.627 Gm (3.153 AU) |
| Perihelion (q) | 437.143 Gm (2.922 AU) |
| Aphelion (Q) | 506.111 Gm (3.383 AU) |
| Orbital period (P) | 2044.56 d (5.6 a) |
| Mean orbital speed | 16.78 km/s |
| Inclination (i) | 15.094° |
| Longitude of the ascending node (Ω) |
138.19° |
| Argument of perihelion (ω) |
247.693° |
| Mean anomaly (M) | 131.137° |
| Physical characteristics D | |
| Dimensions | 106.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Spectral class | unknown |
| Absolute magnitude | 8.72 |
| Albedo (geometric) | unknown |
| Mean surface temperature |
unknown |
357 Ninina is a very large Main belt asteroid.
It was discovered by Auguste Charlois on February 11, 1893 in Nice.
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