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  A 14.4 Jupiter-mass companion orbiting HD 162020


  Last update: January the 8th 2005

 
 
 
  • "The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD 141937, HD 162020, HD 168443, HD 202206: Brown dwarfs or "superplanets"
    S. Udry, M. Mayor, D. Naef, F. Pepe, D. Queloz, N.C. Santos, M. Burnet, 2002
    A&A 390, 267 (ADS)
  • ESO Press Release

    • Larger image (375 kb)


  • Orbital solution (from Udry 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 162020
    8.428198 +/- 0.000056
    51990.667 +/- 0.005
    0.277 +/- 0.002
    -27.328 +/- 0.002
    28.40 +/- 0.23
    1.813 +/- 0.004
    14.4
    0.074
    30
    8.1


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    K2
    Hipparcos
    pi (mas)
    31.99
    Hipparcos
    d (pc)
    31.26
    Hipparcos
    m_v (mag)
    6.35
    Hipparcos
    B-V (mag)
    0.964
    Hipparcos
    T_eff (K)
    4830 +/- 80
    Santos et al. 2001
    M_v (mag)
    6.63
    -
    L (L_sol)
    0.25
    -
    log(g) (CGS)
    4.76 +/- 0.25
    Santos et al. 2001
    M_1 (M_sol)
    0.75
    Geneva models, Schaerer et al. 1993
    log(R'HK)
    -
    -
    P_rot (d)
    -
    -
    Vsini (km/s)
    1.9
    Coralie
    Age (Gyr)
    -
    -
    [Fe/H]
    0.01 +/- 0.11
    Santos et al. 2001

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    stephane.udry@obs.unige.ch