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Maria family (of asteroids)
A Hirayama family of asteroids, with about 70 known members, mostly S-class, that orbits the Sun at a mean distance of 2.55 AU; its members are unusual for main belt asteroids in having a fairly high inclination of about 15°. The prototype and one of the largest of the group is (170) Maria, discovered in 1877 by H. Joseph Perrotin (1845-1904).
Data for (170) Maria
| Diameter | 40 km |
| Semimajor axis | 2.552 AU |
| Perihelion | 2.39 AU |
| Aphelion | 2.72 AU |
| Inclination | 14.4° |
| Period | 4.08 years |
Related category
• ASTEROIDS AND OTHER MINOR PLANETS: TYPES AND GROUPS
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