Journal Article

An Oort cloud origin for the high-inclination, high-perihelion Centaurs

R. Brasser, M. E. Schwamb, P. S. Lykawka and R. S. Gomes

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 420, issue 4, pages 3396-3402
Published in print March 2012 | ISSN: 0035-8711
Published online March 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.20264.x
An Oort cloud origin for the high-inclination, high-perihelion Centaurs

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We investigate the origin of three Centaurs with perihelia in the range 15–30 au, inclinations above 70° and semimajor axes shorter than 100 au. Based on long-term numerical simulations we conclude that these objects most likely originate from the Oort cloud rather than the Kuiper belt or scattered disc. We estimate that there are currently between 1 and 200 of these high-inclination, high-perihelion Centaurs with absolute magnitude H < 8.

Keywords: Kuiper belt: general; minor planets, asteroids: general; Oort Cloud

Journal Article.  5331 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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