Families among high-inclination asteroids

► Systematic search for collisional families among high-inclination asteroids. ► A lot of confirmed or newly discovered families. ► Several small, very compact clusters are found as well. ► The best example is (5438) Lorre cluster. We present a new classification of families identified among the pop...

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Bibliographic Details
Published in:Icarus (New York, N.Y. 1962) N.Y. 1962), 2011-11, Vol.216 (1), p.69-81
Main Authors: Novaković, Bojan, Cellino, Alberto, Knežević, Zoran
Format: Article
Language:English
Subjects:
Asteroids
Asteroids, Dynamics
Astronomy
Collisional physics
Earth, ocean, space
Exact sciences and technology
Solar system
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Summary:► Systematic search for collisional families among high-inclination asteroids. ► A lot of confirmed or newly discovered families. ► Several small, very compact clusters are found as well. ► The best example is (5438) Lorre cluster. We present a new classification of families identified among the population of high-inclination asteroids. We computed synthetic proper elements for a sample of 18,560 numbered and multi-opposition objects having sine of proper inclination greater than 0.295. We considered three zones at different heliocentric distances (inner, intermediate and outer region) and used the standard approach based on the Hierarchical Clustering Method (HCM) to identify families in each zone. In doing so, we used slightly different approach with respect to previously published methodologies, to achieve a more reliable and robust classification. We also used available SDSS color data to improve membership and identify likely family interlopers. We found a total of 38 families, as well as a significant number of clumps and clusters deserving further investigation.
ISSN:0019-1035
1090-2643
DOI:10.1016/j.icarus.2011.08.016