Rotational breakup as the origin of small binary asteroids View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2008-07

AUTHORS

Kevin J. Walsh, Derek C. Richardson, Patrick Michel

ABSTRACT

Binary asteroids: Satellites formed from the rubbleMany asteroids and trans-neptunian objects have satellites: the tally stands at over 150 on http://tinyurl.com/dweqf. The smallest of these binary systems are main-belt and near-Earth asteroids, but the environments of these two types of object are very different, making it difficult to work out a common mechanism to explain their formation. Now Walsh et al. present a model that fits the bill. Properties of the observed main-belt and near-Earth asteroids with satellites are matched by simulations involving the slow spinup of a 'rubble pile' asteroid via the thermal YORP effect (where radiation from an irregular body exerts a net force on that body). The mass shed from the equator of a spinning body accretes into a satellite if the material consists of particles undergoing energy-dissipating collisions. More... »

PAGES

188-191

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/nature07078

DOI

http://dx.doi.org/10.1038/nature07078

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1029464769

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/18615078


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