(538) Friederike
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Asteroid (538) Friederike |
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| Properties of the orbit ( animation ) | |
| Orbit type | Outer main belt |
| Asteroid family | Hygiea family |
| Major semi-axis | 3,162 AU |
| eccentricity | 0.165 |
| Perihelion - aphelion | 2.64 AU - 3.684 AU |
| Inclination of the orbit plane | 6.5 ° |
| Length of the ascending node | 141.3 ° |
| Argument of the periapsis | 228.5 ° |
| Time of passage of the perihelion | April 18, 2012 |
| Sidereal period | 5 a 227 d |
| Mean orbital velocity | 16.6 km / s |
| Physical Properties | |
| Medium diameter | 72.48 km |
| Albedo | 0.0641 |
| Rotation period | 27 h 0 min |
| Absolute brightness | 9.3 mag |
| history | |
| Explorer | Paul Goetz |
| Date of discovery | July 18, 1904 |
| Another name | 1904 OK |
| 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. | |
(538) Friederike is an asteroid of the main belt that was discovered on July 18, 1904 by the German astronomer Paul Götz in Heidelberg .
The asteroid was named after a friend of the discoverer.