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  A very low-mass planet in eccentric orbit around HD 108147


  Last update: January the 8th 2005

 
 
 
  • "The CORALIE survey for southern extra-solar planets VII: two short-period Saturnian companions to HD 108147 and HD 168746"
    F. Pepe, M. Mayor, F. Galland, D. Naef, D, Queloz, N.C. Santos, S. Udry, M. Burnet, 2002
    A&A 388, 632 (ADS)
  • ESO Press Release

    • Larger image (372 kb)


  • Orbital solution (from Pepe et al. 2002):

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (km/s)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    HD 108147
    10.901 +/- 0.001
    51591.6 +/- 0.1
    0.498 +/- 0.025
    -5.026 +/- 0.001
    318.95 +/- 3.03
    0.036 +/- 0.001
    0.40
    0.104
    118
    9.2


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    F8/G0
    Hipparcos
    pi (mas)
    25.95
    Hipparcos
    d (pc)
    38.57
    Hipparcos
    m_v (mag)
    6.99
    Hipparcos
    B-V (mag)
    0.537
    Hipparcos
    T_eff (K)
    6265 +/- 40
    Santos et al. 2001
    M_v (mag)
    4.06
    -
    L (L_sol)
    1.93
    -
    log(g) (CGS)
    4.59 +/- 0.15
    Santos et al. 2001
    M_1 (M_sol)
    1.27 +/- 0.02
    Geneva models, Schaerer et al. 1993
    log(R'HK)
    -4.72
    Coralie
    P_rot (d)
    8.7
    Noyes et al. 1984
    Vsini (km/s)
    5.3
    Coralie
    Age (Gyr)
    2.17
    Donahue 1993
    [Fe/H]
    0.2 +/- 0.06
    Santos et al. 2001

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    stephane.udry@obs.unige.ch