Notes for GQ Lup

by Jean Schneider

update: 9 April 2005

The planets:

• Detection method: Imaging
• Basic data:

  Name:	GQ Lup b
  M.sini:	1 - 42 MJ
  Radius:	1.8 RJ
  Temperature:	2000 ± K
  Semi-major axis: (projected distance)	103 ± 37 AU
  Orbital period:	~ 1200 yr
  Eccentricity:	-
  Omega (deg):	-
  T_peri (JD-2450000):	-
  Inclination:	-

• Remarks:
  4 Apr 05: The value of the mass, resting on planet models, is very uncertain and different with different models.
• References:
  • NEUHÄUSER R., GUENTHER E., WUCHTERL G., MUGRAUER M., BEDALOV A. & HAUSCHILDT P., 2005
    Evidence for a co-moving sub-stellar companion to GQ Lup.
    Astron. & Astrophys., 435, L13
    paper

• Other Web pages:
  • ESO Press Release

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  The star:

  • Distance: 140 ± 50pc
  • Spectral type: K7eV
  • Apparent magnitude: V = 11.40
  • Coordinates (2000): RA = 15 49 12.144 , DEC = -35 39 03.95
  • Metallicity: [Fe/H] =
  • Mass (M_sun): M = 0.7
  • More data:
    • Basic Data (from Simbad)
    • Most recent refs. (from ADS; enter ` GQ Lup ' in the `objects' field)

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