A revised orbital ephemeris for HAT-P-9b

@article{Dittmann2012ARO,
  title={A revised orbital ephemeris for HAT-P-9b},
  author={Jason A. Dittmann and Laird M. Close and Louis J. Scuderi and Jake D. Turner and Peter C. Stephenson},
  journal={New Astronomy},
  year={2012},
  volume={17},
  pages={438-441}
}
Abstract We present here three transit observations of HAT-P-9b taken on 14 February 2010 and 05 April 2010 UT from the University of Arizona’s 1.55 m Kuiper telescope on Mt. Bigelow. Our two light curves were obtained in the Arizona-I filter for all our observations, and underwent the same reduction process. Both transits occurred approximately 24 min earlier than expected from the ephemeris of Shporer et al. (2009) . However, due to the large time span between our observed transits and those… Expand

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