406 Erna
| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery Date | August 22, 1895 |
| Alternate Designations | 1895 CB B |
| Category | Main belt |
| Orbital Elements C Epoch 30 January, 2005 (JD 2453400.5) | |
| Eccentricity (e) | 0.183 |
| Semi-Major Axis (a) | 435.972 Gm (2.914 AU) |
| Perihelion (q) | 356.339 Gm (2.382 AU) |
| Aphelion (Q) | 515.605 Gm (3.447 AU) |
| Orbital Period (P) | 1817.147 d (4.98 a) |
| Mean Orbital Speed | 17.45 km/s |
| Inclination (i) | 4.198° |
| Longitude of the Ascending Node (Ω) | 315.863° |
| Argument of Perihelion (ω) | 38.107° |
| Mean Anomaly (M) | 336.544° |
| Physical Characteristics | |
| Dimensions | 49.0 km |
| Mass | unknown |
| Density | unknown |
| Surface Gravity | unknown |
| Escape Velocity | unknown |
| Rotation Period | unknown |
| Spectral Class | P |
| Absolute Magnitude | 10.36 |
| Albedo | unknown |
| Mean Surface Temperature | unknown |
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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