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Direct detection of the asteroidal YORP effect

Lowry, S.C., Fitzsimmons, Alan, Pravec, Petr, Vokrouhlicky, David, Boehnhardt, Hermann, Taylor, Patrick A., Margot, Jean-Luc, Galád, Adrian, Irwin, Mike, Irwin, Jonathan, and others. (2007) Direct detection of the asteroidal YORP effect. Science, 316 (5822). pp. 272-274. ISSN 0036-8075. E-ISSN 1095-9203. (doi:10.1126/science.1139040) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1126/science.1139040

Abstract

The Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect is believed to alter the spin states of small bodies in the solar system. However, evidence for the effect has so far been indirect. We report precise optical photometric observations of a small near-Earth asteroid, (54509) 2000 PH5, acquired over 4 years. We found that the asteroid has been continuously increasing its rotation rate co over this period by dw/dt = 2.0 (±0.2) x 10^-4 degrees per day squared. We simulated the asteroid's close Earth approaches from 2001 to 2005, showing that gravitational torques cannot explain the observed spin rate increase. Dynamical simulations suggest that 2000 PH5 may reach a rotation period of ~20 seconds toward the end of its expected lifetime.

Item Type: Article
DOI/Identification number: 10.1126/science.1139040
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Science [Field not mapped to EPrints] AD - School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom [Field not mapped to EPrints] AD - Astronomical Institute, Academy of Sciences of the Czech Republic, Fricova 1, CZ-25165 Ondrejov, Czech Republic [Field not mapped to EPrints] AD - Institute of Astronomy, Charles University, V Holesovickách 2, 18000 Prague 8, Czech Republic [Field not mapped to EPrints] AD - Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Strasse 2, 37191 Katlenburg-Lindau, Germany [Field not mapped to EPrints] AD - Department of Astronomy, Cornell University, Ithaca, NY 14853, United States [Field not mapped to EPrints] AD - Department of Astronomy, Physics of the Earth, and Meteorology, Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia [Field not mapped to EPrints] AD - Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: asteroid, detection method, photometer, planetary rotation, solar system, article, astronomy, dynamics, gravity, observation, photometry, priority journal, rotation, simulation
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Stephen Lowry
Date Deposited: 08 Dec 2015 22:58 UTC
Last Modified: 29 May 2019 16:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52307 (The current URI for this page, for reference purposes)
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