Families among high-inclination asteroids

Details Families among high-inclination asteroids Families among high-inclination asteroids

2011-08-18

arxiv.org/abs/1108.3740v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Accepted by Icarus

Scientific paper

10.1016/j.icarus.2011.08.016

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.

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