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

@article{Taylor2007SpinRO,
  title={Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect},
  author={Patrick A. Taylor and Jean-Luc Margot and David Vokrouhlick{\'y} and Daniel J. Scheeres and Petr Pravec and S C Lowry and Alan Fitzsimmons and Michael C. Nolan and Steven Jeffrey Ostro and Lance A. M. Benner and Jon D. Giorgini and Christopher Magri},
  journal={Science},
  year={2007},
  volume={316},
  pages={274 - 277}
}
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… 

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