Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discovery of a young subfamily of the (221)~Eos asteroid family   In this work we report the discovery of a young cluster of asteroids that
originated by the breakup of an asteroid member of the (221)Eos family. By
applying the Hierarchical clustering method to the catalog of proper elements
we have identified 26 members of this new small group of asteroids. We have
established that the statistical significance of this cluster is $>99\%$,
therefore it corresponds to a real asteroid family, named the (633)Zelima
cluster, after its lowest numbered member. The orbits of its members are
dynamically stable, a fact that enabled us to use the backward integration
method, in two variants to identify potential interlopers and estimate its age.
Applying it first on the orbits of the nominal family members we identified
three asteroids as interlopers. Then we applied it on a set of statistically
equivalent clones of each member to determine the age of the cluster, with a
result of $2.9\pm0.2$Myrs.

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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an