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Maria family (of asteroids)





A Hirayama family of asteroids, with about 70 known members, mostly S-type, that orbits the Sun at a mean distance of 2.55 AU (astronomical units); 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