308 Polyxo
| Discovery A | |
|---|---|
| Discoverer | A. Borrelly |
| Discovery Date | March 31, 1891 |
| Alternate Designations | B |
| Category | Main belt |
| Orbital Elements C Epoch 30 January, 2005 (JD 2453400.5) | |
| Eccentricity (e) | 0.038 |
| Semi-Major Axis (a) | 411.542 Gm (2.751 AU) |
| Perihelion (q) | 395.843 Gm (2.646 AU) |
| Aphelion (Q) | 427.242 Gm (2.856 AU) |
| Orbital Period (P) | 1666.571 d (4.56 a) |
| Mean Orbital Speed | 17.96 km/s |
| Inclination (i) | 4.364° |
| Longitude of the Ascending Node (Ω) | 181.927° |
| Argument of Perihelion (ω) | 109.987° |
| Mean Anomaly (M) | 248.11° |
| Physical Characteristics | |
| Dimensions | 141.0 km |
| Mass | unknown |
| Density | unknown |
| Surface Gravity | unknown |
| Escape Velocity | unknown |
| Rotation Period | unknown |
| Spectral Class | T |
| Absolute Magnitude | 8.17 |
| Albedo | unknown |
| Mean Surface Temperature | unknown |
308 Polyxo is a very large Main belt asteroid. It is classified as a rare T-type asteroid.
It was discovered by A. Borrelly on March 31, 1891 in Marseilles.
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