(331) Etheridgea
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Asteroid (331) Etheridgea |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.022 AU |
| eccentricity | 0.1018 |
| Perihelion - aphelion | 2.714 AU - 3.330 AU |
| Inclination of the orbit plane | 6.06 ° |
| Length of the ascending node | 22.0 ° |
| Argument of the periapsis | 333.3 ° |
| Time of passage of the perihelion | January 12, 2010 |
| Sidereal period | 5 a 93 d |
| Mean orbital velocity | 17.1 km / s |
| Physical Properties | |
| Medium diameter | (74.9 ± 2.7) km |
| Albedo | 0.04 |
| Rotation period | 6 h 49 min |
| Absolute brightness | 9.6 likes |
| history | |
| Explorer | A. Charlois |
| Date of discovery | April 1, 1892 |
| Another name | 1949 CM |
| 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. | |
(331) Etheridgea is an asteroid of the outer main asteroid belt , which was discovered on April 1, 1892 by Auguste Charlois at the Observatory of Nice .
Etheridgea moves at a distance of 2.7 ( perihelion ) to 3.3 ( aphelion ) astronomical units in about 5.3 years around the sun . The orbit is inclined 6.1 ° to the ecliptic , the orbital eccentricity is 0.10.
Etheridgea has a diameter of about 75 kilometers. It has a dark surface with an albedo of 0.04.