(668) Dora
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Asteroid (668) Dora |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Dora family |
| Major semi-axis | 2.7944 AU |
| eccentricity | 0.2344 |
| Perihelion - aphelion | 2.1394 AU - 3.4493 AU |
| Inclination of the orbit plane | 6.8411 ° |
| Length of the ascending node | 214.4795 ° |
| Argument of the periapsis | 113.4 ° |
| Time of passage of the perihelion | August 14, 2011 |
| Sidereal period | 4.67 a |
| Mean orbital velocity | 17.6 km / s |
| Physical Properties | |
| Medium diameter | 21.517 km (± 0.105) |
| Albedo | 0.042 (± 0.007) |
| Rotation period | 22.914 h |
| Absolute brightness | 12.0 mag |
| Spectral class | SMASS-2: Ch |
| history | |
| Explorer | August Kopff |
| Date of discovery | July 27, 1908 |
| Another name | 1908 DO |
| 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. | |
(668) Dora is an asteroid of the main belt that was discovered on July 27, 1908 by the German astronomer August Kopff at the State Observatory in Heidelberg-Königstuhl ( IAU code 688) near Heidelberg .
The asteroid was named after a friend of the discoverer's wife.