An observation of a mutual event between two satellites of Uranus

@article{Hidas2008AnOO,
  title={An observation of a mutual event between two satellites of Uranus},
  author={Marton G. Hidas and Apostolos A. Christou and T. M. Brown Las Cumbres Observatory Global Telescope and University of Southern California and Santa Barbara and Armagh Observatory},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2008},
  volume={384},
  pages={38}
}
We present observations of the occultation of Umbriel by Oberon on 2007 May 4. We believe this is the first observed mutual event between satellites of Uranus. Fitting a simple geometric model to the light curve, we measure the mid-event time with a precision of 4 s. We assume previously measured values for the albedos of the two satellites, and measure the impact parameter to be 500 ± 80 km. These measurements are more precise than estimates based on current ephemerides for these satellites… Expand

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