(209) Dido
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Asteroid (209) Dido |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.147 AU |
| eccentricity | 0.062 |
| Perihelion - aphelion | 2.953 AU - 3.341 AU |
| Inclination of the orbit plane | 7.2 ° |
| Length of the ascending node | 0.8 ° |
| Argument of the periapsis | 250.3 ° |
| Time of passage of the perihelion | October 11, 2011 |
| Sidereal period | 5 a 213 d |
| Mean orbital velocity | 16.8 km / s |
| Physical Properties | |
| Medium diameter | (160 ± 3) km |
| Albedo | 0.03 |
| Rotation period | 5.7 h |
| Absolute brightness | 8.2 likes |
| Spectral class | C. |
| history | |
| Explorer | CHF Peters |
| Date of discovery | October 22, 1879 |
| Another name | A909 AB, A909 GB, A912 RB |
| 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. | |
(209) Dido is an asteroid of the main asteroid belt that was discovered by Christian Heinrich Friedrich Peters on October 22, 1879 .
The celestial body was named after Dido , the mythical, first queen of Carthage .
Dido moves at a distance of 2.9 ( perihelion ) to 3.3 ( aphelion ) astronomical units around the sun in 5.6 years . The orbit is inclined 3.8 ° to the ecliptic , the orbital eccentricity is 0.04.
With a diameter of 160 kilometers, Dido is one of the larger asteroids in the main belt. It has a very dark, carbon-rich surface with an albedo of 0.03. It rotates on its own axis in just under 6 hours.