(322) Phaeo
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Asteroid (322) Phaeo |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt |
| Major semi-axis | 2.782 AU |
| eccentricity | 0.245 |
| Perihelion - aphelion | 2.1 AU - 3.464 AU |
| Inclination of the orbit plane | 8.1 ° |
| Length of the ascending node | 252.4 ° |
| Argument of the periapsis | 115.5 ° |
| Time of passage of the perihelion | March 2, 2012 |
| Sidereal period | 4 a 234 d |
| Mean orbital velocity | 17.6 km / s |
| Physical Properties | |
| Medium diameter | 71 km |
| Albedo | 0.0876 |
| Rotation period | 17 h 35 min |
| Absolute brightness | 9.01 mag |
| Spectral class | X |
| history | |
| Explorer | A. Borrelly |
| Date of discovery | November 27, 1891 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(322) Phaeo is an asteroid of the main asteroid belt discovered by Alphonse Borrelly at the Marseille Observatory on November 27, 1891 .
Phaeo moves from 2.1065 ( perihelion ) to 3.4687 ( aphelion ) astronomical units in 4.6543 years around the sun . The orbit is inclined 8.0158 ° to the ecliptic , the orbital eccentricity is 0.2443.
Phaeo has a diameter of 71 kilometers. The asteroid has a dark surface with an albedo of 0.088 and rotates around its own axis in around 17 hours and 35 minutes.