406 Erna
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Discovery
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| Discovered by | Auguste Charlois |
| Discovery date | August 22, 1895 |
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Designations
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| Alternate name(s) | 1895 CB |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 515.605 Gm (3.447 AU) |
| Perihelion | 356.339 Gm (2.382 AU) |
| Semi-major axis | 435.972 Gm (2.914 AU) |
| Eccentricity | 0.183 |
| Orbital period | 1817.147 d (4.98 a) |
| Average orbital speed | 17.45 km/s |
| Mean anomaly | 336.544° |
| Inclination | 4.198° |
| Longitude of ascending node | 315.863° |
| Argument of perihelion | 38.107° |
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Physical characteristics
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| Dimensions | 49.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | P |
| Absolute magnitude (H) | 10.36 |
406 Erna is a typical Main belt asteroid. It is classified as a P-type asteroid and is probably composed of primitive carbonaceus chondritic materials.
It was discovered by Auguste Charlois on August 22, 1895 in Nice.
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