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Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect

Taylor, Patrick A. ; Margot, Jean-Luc ; Vokrouhlický, David ; [et al.]

American Association for the Advancement of Science (AAAS) ; 2007

In: Science Vol. 316, No. 5822 ( 2007-04-13), p. 274-277

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In: Science, American Association for the Advancement of Science (AAAS), Vol. 316, No. 5822 ( 2007-04-13), p. 274-277

Abstract: Radar and optical observations reveal that the continuous increase in the spin rate of near-Earth asteroid (54509) 2000 PH5 can be attributed to the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, a torque due to sunlight. The change in spin rate is in reasonable agreement with theoretical predictions for the YORP acceleration of a body with the radar-determined size, shape, and spin state of 2000 PH5. The detection of asteroid spin-up supports the YORP effect as an explanation for the anomalous distribution of spin rates for asteroids under 10 kilometers in diameter and as a binary formation mechanism.

Type of Medium: Online Resource

ISSN: 0036-8075 , 1095-9203

URL: Article

DOI: 10.1126/science.1139038

RVK:

TA 1000

RVK:

WA 15000

Language: English

Publisher: American Association for the Advancement of Science (AAAS)

Publication Date: 2007

detail.hit.zdb_id: 128410-1