(251) Sophia
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.