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  A very eccentric planet orbiting HD 80606


  Last update: March the 5th 2005

 
 
 
  • "HD 80606 b, a planet on an extremely elongated orbit"
    D.Naef, D.W. Latham, M. Mayor, T. Mazeh, J.L. Beuzit, G.A. Drukier, C. Perrier-Bellet, D. Queloz, J.P. Sivan, G. Torres, S. Udry and S. Zucker, 2001
    A&A 375, L27 (ADS)
  • April 4th 2001 ESO Press Release



  • HD 80606-HD 80607 is a visual binary with a separation of about 1800 AU
  • The G Dwarf HIRES-ELODIE Planet Search:
  • Teams members:
      CfA: Dave Latham, Guillermo Torres
      Geneva: Michel Mayor, Dominique Naef, Didier Queloz, Stephane Udry
      Grenoble: Christian Perrier-Bellet, Jean-Luc Beuzit
      OHP: Jean-Pierre Sivan
      Tel Aviv: Tsevi Mazeh, Gordon Drukier, Shay Zucker

    • Spectrographs/Telescopes:



      • Hires data: green open circles; Elodie data: red filled circles
      Top: Best Keplerian fit to the Hires-Elodie data
      Bottom: Residuals around the fitted soltuion
      Larger image (374 kb)


    • Orbital solution (from Naef et al. 2001):

      Object
      Period
      (days)
      T0
      (JD - 2 400 000)
      Eccentricity
      V
      (km/s)
      Omega
      (deg)
      K1
      (km/s)
      delta_V
      (Hires-Elodie)
      (km/s)
      m2sini
      (M_Jup)
      a
      (AU)
      N
      Residuals
      (m/s)
      HD 80606
      111.81 +/- 0.23
      51973.72 +/- 0.29
      0.927 +/- 0.012
      3.767 +/- 0.010
      291.0 +/- 6.7
      0.411 +/- 0.031
      3.807
      3.90
      0.469
      55 (Elodie) +
      6 (Hires)
      17.7


    • Stellar properties:

      Parameter
      Value
      Reference
      Sp. Type
      G5
      Hipparcos
      pi (mas)
      17.13
      Hipparcos
      d (pc)
      58.4
      Hipparcos
      m_v (mag)
      9.06
      Hipparcos
      B-V (mag)
      0.765
      Hipparcos
      T_eff (K)
      5645 +/- 45
      Naef et al. 2001
      M_v (mag)
      5.23
      -
      L (L_sol)
      0.75
      -
      log(g) (CGS)
      4.50 +/- 0.20
      Naef et al. 2001
      M_1 (M_sol)
      1.1
      -
      log(R'HK)
      -
      -
      P_rot (d)
      -
      -
      Vsini (km/s)
      0.9
      Naef et al. 2001
      Age (Gyr)
      -
      -
      [Fe/H]
      0.43 +/- 0.06
      Naef et al. 2001

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      stephane.udry@obs.unige.ch