(685) Hermia
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Asteroid (685) Hermia |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.2362 AU |
| eccentricity | 0.1963 |
| Perihelion - aphelion | 1.7973 AU - 2.6751 AU |
| Inclination of the orbit plane | 3.648 ° |
| Sidereal period | 3,344 a |
| Physical Properties | |
| Medium diameter | (10.95 ± 0.9) km |
| Rotation period | 50 h 26 min |
| Absolute brightness | 12.0 mag |
| history | |
| Explorer | Karl Wilhelm Lorenz |
| Date of discovery | August 12, 1909 |
| Another name | 1909 HE |
| 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. | |
(685) Hermia is an asteroid of the main belt that was discovered on August 12, 1909 by the German astronomer Karl Wilhelm Lorenz in Heidelberg .
The origin of the name is not known. One guess it is derived from a character from William Shakespeare's comedy A Midsummer Night's Dream .