Themis family
Template:Short description The Themis family (adj. Themistian; FIN: 602Script error: No such module "Check for unknown parameters".) is a family of carbonaceous asteroids located in the outer portion of the asteroid belt, at a mean distance of 3.13 AU from the Sun. It is one of the largest families with over 4700 known members,[1] and consists of a well-defined core of larger bodies surrounded by a region of smaller ones. The collisional Themis family is named after its parent body, the asteroid 24 Themis, discovered on 5 April 1853 by Italian astronomer Annibale de Gasparis.[2]
Description
The Themis family is one of the largest and longest-recognized dynamical families of asteroids, and is made up of C-type asteroids with a composition believed to be similar to that of carbonaceous chondrites.[3] To date, the Themis family comprises approximately 535 known asteroids.
Asteroids in the Themis family share the following orbital elements:
- semimajor axes between 3.08 AU and 3.24 AU
- orbital eccentricities between 0.09 and 0.22
- orbital inclinations of less than 3°
List
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Some of the largest members of this family include:[4][5]
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See also
References
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- ↑ DIVERSITY OF TYPES OF HYDRATED MINERALS ON C≠CLASS ASTEROIDS A. S. Rivkin, Massachusetts Institute of Technology, E. S. Howell, Arecibo Observatory, S. J. Bus, Institute for Astronomy
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External links
- Nesvorny HCM Asteroid Families V3.0, Small Bodies Data Ferret
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