The Secular Evolution and Dynamical Architecture of the Neptunian Triplet Planetary System HD 69830

  title={The Secular Evolution and Dynamical Architecture of the Neptunian Triplet Planetary System HD 69830},
  author={Ji Jianghui and Hiroshi Kinoshita and Liu Lin and Li Guangyu Purple Mountain Observatory and C. J. Cesarsky Naoc and Dtm and Ciw and Naoj and Nanjing Univ.},
  journal={The Astrophysical Journal},
We perform numerical simulations to study the secular orbital evolution and dynamical structure in the HD 69830 planetary system, using the best-fit orbital solutions by Lovis and coworkers. In the simulations, we show that a triplet Neptunian system is stable for at least 2 Gyr and that the stability would not be greatly influenced even if we varied the planetary masses. In addition, we employ Laplace-Lagrange secular theory to investigate the long-term behavior of the system, and the outcomes… Expand

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