Orbits and Photometry of Pluto's Satellites: Charon, S/2005 P1, and S/2005 P2

@article{Buie2006OrbitsAP,
  title={Orbits and Photometry of Pluto's Satellites: Charon, S/2005 P1, and S/2005 P2},
  author={Marc W. Buie and William M. Grundy and Evangeline Fung Yu Young and Lyman Young and S. A. Stern Lowell Observatory and Southwest Research Institute},
  journal={The Astronomical Journal},
  year={2006},
  volume={132},
  pages={290-298}
}
We present new astrometry of Pluto's three satellites from images taken of the Pluto system during 2002-2003 with the High Resolution Camera mode of the Advanced Camera for Surveys instrument on the Hubble Space Telescope. The observations were designed to produce an albedo map of Pluto, but they also contain images of Charon and the two recently discovered satellites S/2005 P1 and S/2005 P2. Orbits fitted to all three satellites are nearly coplanar and for Charon and P2 have eccentricities… 

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