(999) Zachia
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Asteroid (999) Zachia |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.6117 AU |
| eccentricity | 0.2161 |
| Perihelion - aphelion | 2.0474 AU - 3.176 AU |
| Inclination of the orbit plane | 9.768 ° |
| Sidereal period | 4,221 a |
| Mean orbital velocity | 18.43 km / s |
| Physical Properties | |
| Medium diameter | 25.3 km |
| Albedo | 0.199 |
| Rotation period | 22.77 h |
| Absolute brightness | 10,877 likes |
| Spectral class | C. |
| history | |
| Explorer | K. Reinmuth |
| Date of discovery | 1923 |
| Another name | 1923 NW, 1977 CG |
| 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. | |
(999) Zachia is an asteroid of the main belt that was discovered on August 9, 1923 by the German astronomer Karl Wilhelm Reinmuth at the Heidelberg-Königstuhl State Observatory at the University of Heidelberg .
The asteroid is named after the German astronomer Franz Xaver von Zach .