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  A short-period planet around HD 27894
  Last update: October the 14th 2005

 
 
 
 
 
 
  • "The HARPS search for southern extra-solar planets. IV. Three close-in planets around HD 2638, HD 27894 and HD 63454"
    C. Moutou, M. Mayor, F. Bouchy, C. Lovis, F. Pepe, D. Queloz, N.C. Santos, S. Udry, W. Benz, G. Lo Curto, D. Naef, D. Ségransan, J.-P. Sivan, 2005
    A&A 439, 367(ADS)
  • Announced during the Aspen Winter Conference 2005 "Planet Formation and Detection", Aspen, February the 8th 2005

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    Larger image (30 kb)


  • Orbital solution (from Moutou et al. 2005):

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (m/s)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    HD 27894
    17.991 +/- 0.007
    53275.46 +/- 0.48
    0.049 +/- 0.008
    82.9023 +/- 0.0003
    132.9 +/- 9.7
    58.1 +/- 0.5
    0.62
    0.122
    20
    4.0


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    K2V
    Hipparcos
    pi (mas)
    23.60
    Hipparcos
    d (pc)
    42.37
    Hipparcos
    m_v (mag)
    9.36
    Hipparcos
    B-V (mag)
    1.003
    Hipparcos
    T_eff (K)
    4875 +/- 81
    Moutou et al. 2005
    M_v (mag)
    6.225
    -
    L (L_sol)
    0.36
    -
    log(g) (CGS)
    4.22 +/- 0.26
    Moutou et al. 2005
    M_1 (M_sol)
    0.75
    Moutou et al. 2005
    log(R'HK)
    -
    -
    P_rot (d)
    -
    -
    Vsini (km/s)
    -
    -
    Age (Gyr)
    -
    -
    [Fe/H]
    0.30 +/- 0.07
    Moutou et al. 2005


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    stephane.udry@obs.unige.ch