285 Regina
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| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery date | August 3, 1889 |
| Alternate designations B |
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| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.209 |
| Semi-major axis (a) | 461.004 Gm (3.082 AU) |
| Perihelion (q) | 364.664 Gm (2.438 AU) |
| Aphelion (Q) | 557.344 Gm (3.726 AU) |
| Orbital period (P) | 1975.873 d (5.41 a) |
| Mean orbital speed | 16.97 km/s |
| Inclination (i) | 17.621° |
| Longitude of the ascending node (Ω) |
311.449° |
| Argument of perihelion (ω) |
15.172° |
| Mean anomaly (M) | 91.705° |
| Physical characteristics D | |
| Dimensions | 45.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Spectral class | unknown |
| Absolute magnitude | 10.5 |
| Albedo (geometric) | unknown |
| Mean surface temperature |
unknown |
285 Regina is typical, although fairly large Main belt asteroid.
It was discovered by Auguste Charlois on August 3, 1889 in Nice.
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