(21686) Koschny
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Asteroid (21686) Koschny |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.2836 AU |
| eccentricity | 0.1098 |
| Perihelion - aphelion | 2.0328 AU - 2.5343 AU |
| Inclination of the orbit plane | 1.725 ° |
| Sidereal period | 3.451 a |
| Mean orbital velocity | 19.71 km / s |
| Physical Properties | |
| Medium diameter | ? |
| Dimensions | ? kg |
| Albedo | ? |
| Medium density | ? g / cm³ |
| Rotation period | ? |
| Absolute brightness | 16.0 mag |
| Spectral class | ? |
| history | |
| Explorer | A. Knöfel |
| Date of discovery | September 11, 1999 |
| Another name | 1999 RB 36 |
| 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. | |
(21686) Koschny is an asteroid of the main belt that was discovered on September 11, 1999 by André Knöfel at the Drebach public observatory .
The celestial body was named after the German scientist Detlef Koschny (* 1962), a member of the ESA's European Space Research and Technology Center .