Asteroid Systems: Binaries, Triples, and Pairs

Status Report From: e-Print archive
Posted: Friday, April 3, 2015

Jean-Luc Margot, Petr Pravec, Patrick Taylor, Benoît Carry, Seth Jacobson

(Submitted on 31 Mar 2015)

In the past decade, the number of known binary near-Earth asteroids has more than quadrupled and the number of known large main belt asteroids with satellites has doubled. Half a dozen triple asteroids have been discovered, and the previously unrecognized populations of asteroid pairs and small main belt binaries have been identified. The current observational evidence confirms that small (<20 km) binaries form by rotational fission and establishes that the YORP effect powers the spin-up process. A unifying paradigm based on rotational fission and post-fission dynamics can explain the formation of small binaries, triples, and pairs. Large (>20 km) binaries with small satellites are most likely created during large collisions.

Comments:30 pages, 12 figures. Revised version of chapter for the book ASTEROIDS IV

Subjects:Earth and Planetary Astrophysics (astro-ph.EP)

Cite as:arXiv:1504.00034 [astro-ph.EP] (or arXiv:1504.00034v1 [astro-ph.EP] for this version)

Submission history

From: Jean-Luc Margot 

[v1] Tue, 31 Mar 2015 20:50:55 GMT (2903kb)

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