Alexandra family (of asteroids)
The Alexandra family is a small family of main-belt asteroids lying at a mean distance of 2.6 to 2.7 astronomical units from the Sun, with orbital inclinations of 11 to 12° and a variety of compositions, including representatives from classes C, G, and T. The prototype, 54 Alexandra, was discovered in 1858 by Hermann Goldschmidt.
Data for 54 Alexandra | |
---|---|
diameter | 165 km |
spectral class | C |
semimajor axis | 2.710 AU |
perihelion | 2.18 AU |
aphelion | 3.25 AU |
eccentricity | 0.199 |
inclination | 11.8° |