Koronis family
From Infogalactic: the planetary knowledge core
File:Koronis family.jpg
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 largest known (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
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| 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
