158 Koronis: Difference between revisions
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Revision as of 04:30, 6 November 2009
| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt (Koronis) |
| Semimajor axis | 2.867 AU |
| Perihelion distance | 2.705 AU |
| Aphelion distance | 3.030 AU |
| Orbital period | 4.86 years |
| Inclination | 1.00° |
| Eccentricity | 0.057 |
| Physical characteristics 1 | |
| Diameter | 35.4 km |
| Rotation period | 14.218 hours |
| Spectral class | S |
| Abs. magnitude | 9.27 |
| Albedo 4 | 0.277 |
| History 2 | |
| Discoverer | V. Knorre, 1876 |
158 Koronis ("kuh ROE niss") is a Main belt asteroid. It is an S-type asteroid.
It was discovered by Viktor Knorre on January 4, 1876 from the Berlin observatory. It was the first of his four asteroid discoveries.
The asteroid itself may not be spectacular, but the Koronidian family of asteroids named after it is one of the most important. One member of the family, 243 Ida, has been visited by spacecraft, and gives some idea of how the other asteroids in the family may look.
Based on a model constructed from the lightcurve, the shape of Koronis resembles that of Ida, although it is a bit larger [1].