Koronis family
Compilation of CGI Koronis family asteroids from NASA, see Spins on Koronis asteroids
The Koronis or Koronian family is a family of asteroids in the main belt between Mars and Jupiter. They are thought to have been formed at least two billion years ago in a catastrophic collision between two larger bodies. The family is named after 158 Koronis, and the largest known member (208 Lacrimosa) is about 41 km (25 mi) in diameter. The Koronis family travels in a cluster along the same orbit.[1] Over 300 have been found but only about 20 are larger than 20 km in diameter.
On August 28, 1993, the Galileo spacecraft visited a member of this family, 243 Ida.
Some of the larger Koronis-family asteroids
| Name | Median diameter |
Semi-major axis | Orbital inclination |
Orbital eccentricity | Discovered | |
|---|---|---|---|---|---|---|
| 158 | Koronis | 35.4 km | 2.867 AU | 1.00° | 0.057 | 1876 |
| 167 | Urda | 39.9 km | 2.855 AU | 2.21° | 0.035 | 1876 |
| 208 | Lacrimosa | 41.0 km | 2.895 AU | 1.751° | 0.015 | 1879 |
| 243 | Ida | 31.3 km | 2.861 AU | 1.138° | 0.046 | 1884 |
| 263 | Dresda | 23.0 km | 2.886 AU | 1.314° | 0.079 | 1886 |
| 277 | Elvira | 27.0 km | 2.887 AU | 1.156° | 0.089 | 1888 |
| 311 | Claudia | 24.0 km | 2.897 AU | 3.225° | 0.008 | 1891 |
| 321 | Florentina | 27.0 km | 2.886 AU | 2.594° | 0.043 | 1891 |
| 534 | Nassovia | ? | 2.884 AU | 3.277° | 0.057 | 1904 |
| 720 | Bohlinia | ? | 2.888 AU | 2.359° | 0.014 | 1911 |
| 1223 | Neckar | ? | 2.8690752 AU | 2.55052º | 0.0605204 | 1931 |
| 9908 | Aue | ? | 2.900 AU | 2.68° | 0.0355 | 1971 |
See also
References
- ↑ "Fresh Spin on Solar Powered Asteroids", Space.com, 10 September 2003
External links
This article is issued from Wikipedia - version of the 4/16/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.