(642) Clara
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Asteroid (642) Clara |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.19 AU |
| eccentricity | 0.121 |
| Perihelion - aphelion | 2.803 AU - 3.577 AU |
| Inclination of the orbit plane | 8.2 ° |
| Length of the ascending node | 5.9 ° |
| Argument of the periapsis | 117.4 ° |
| Time of passage of the perihelion | September 14, 2011 |
| Sidereal period | 5 a 255 d |
| Mean orbital velocity | 16.6 km / s |
| Physical Properties | |
| Medium diameter | (33.4 ± 1.5) km |
| Albedo | 0.16 |
| Rotation period | 8 h 14 min |
| Absolute brightness | 10.0 mag |
| Spectral class | S. |
| history | |
| Explorer | Max Wolf |
| Date of discovery | September 8, 1907 |
| Another name | 1907 ZY |
| 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. | |
(642) Clara is an asteroid of the main belt that was discovered on September 8, 1907 by the German astronomer Max Wolf in Heidelberg .
The asteroid was named after one of the discoverer's housekeepers.