308 Polyxo
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Discovery A | |
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Discoverer | A. Borrelly |
Discovery date | March 31, 1891 |
Alternate designations B |
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Category | Main belt |
Orbital elements C | |
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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 D | |
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 (geometric) | 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.
Minor planets | ||
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List of asteroids |
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.