(251) Sophia
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Asteroid (251) Sophia |
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| Properties of the orbit ( animation ) | |
| Orbit type | Outer main belt |
| Asteroid family | Eos family |
| Major semi-axis | 3.101 AU |
| eccentricity | 0.102 |
| Perihelion - aphelion | 2.784 AU - 3.418 AU |
| Inclination of the orbit plane | 10.5 ° |
| Length of the ascending node | 156.3 ° |
| Argument of the periapsis | 285.3 ° |
| Time of passage of the perihelion | January 13, 2012 |
| Sidereal period | 5 a 168 d |
| Mean orbital velocity | 16.9 km / s |
| Physical Properties | |
| Medium diameter | 28 km |
| Albedo | 0.2188 |
| Rotation period | 20 h 13 min |
| Absolute brightness | 10.0 mag |
| history | |
| Explorer | Johann Palisa |
| Date of discovery | October 4, 1885 |
| 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. | |
(251) Sophia is an asteroid of the outer main asteroid belt , which on October 4, 1885 by Johann Palisa the Observatory of Wien was discovered.
Sophia moves at a distance of 2.7655 ( perihelion ) to 3.4200 ( aphelion ) astronomical units around the sun in 5.4391 years . The orbit is inclined 10.5286 ° to the ecliptic , the orbital eccentricity is 0.1058.
Sophia has a diameter of 28 kilometers. It has a light surface with an albedo of 0.219.