Five Planets Orbiting 55 Cancri 1

@inproceedings{Fischer2007FivePO,
  title={Five Planets Orbiting 55 Cancri 1},
  author={Debra A. Fischer and Geoffrey W. Marcy and Rebecca P. Butler and Steven S. Vogt and Greg P. Laughlin and Gregory W. Henry and David Abouav and Kathryn M. G. Peek and Jason T. Wright and J. A. Johnson and Chris McCarthy and Howard T. Isaacson},
  year={2007}
}
We report 18 years of Doppler shift measurements of a nearby star, 55 Cancri, that exhibits strong evidence for five orbiting planets. The four previously reported planets are strongly confirmed here. A fifth planet is presented, with an apparent orbital period of 260 days, placing it 0.78 AU from the star in the large empty zone between two other planets. The velocity wobble amplitude of 4.9 m s 1 implies a minimum planet massM sin i 1⁄4 45:7 M . The orbital eccentricity is consistent with a… CONTINUE READING
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