(3258) Somnium
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Asteroid (3258) Somnium |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.206 AU |
| eccentricity | 0.196 |
| Perihelion - aphelion | 1,773 AU - 2,639 AU |
| Inclination of the orbit plane | 7.557 ° |
| Sidereal period | 3.28 a |
| Mean orbital velocity | 19.8 km / s |
| Physical Properties | |
| Absolute brightness | 13.1 mag |
| history | |
| Explorer | Paul Wild |
| Date of discovery | September 8, 1983 |
| Another name | 1983 RJ, 1979 HF 3 , 1980 YG |
| 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. | |
(3258) Somnium is an asteroid of the main belt that was discovered on September 8, 1983 by the Swiss astronomer Paul Wild from the Zimmerwald Observatory at the University of Bern .
The asteroid is named after Johannes Kepler's book Somnium (The Dream).