Imaginary Picture of GQ Lup b

Display orbital revolution of GQ Lup b around the hoststar GQ Lup
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Exoplanet Name : GQ Lup b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 4.6000 (Rjup) 51.5614 (Rearth)
Mass (Mjup / Me): 31.0000 (Mjup) 9856.0780 (Mearth)
Semi Major Axis / Orbital Distance Calculated 32.0000 (AU) 32.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 79025.30 (Days Est.)
Surface Gravity (G Earth) 3.7073
Star Radiation at Atmospheric Boundary: 0.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 25.9 (K)
Blackbody T 0.3(K) 24.4 (K)
Blackbody T 0.7(K) 19.7 (K)
Tidally Locked Blackbody T 0.1(K) 30.9 (K)
Tidally Locked Blackbody T 0.3(K) 29.0 (K)
Size Class:
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection : Flux
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : GQ Lup
Alternate Name :
Star Distance(LY) : 456.6
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4000 (K)
Spectral type : K7eV
UV portion[%]: 0.7
Visible portion[%]: 24.5
IR portion[%]: 74.8
Metalicity : 0.0
Absolute Magnitude: 5.7
Apparent Magnitude: 11.4
Right Ascension(RA) 237.3004
Declination (DEC) -35.6508
Hubble Space Telescope Guide Star Catalog (GSC) ID 07340-00177
Discovered by
Discovery Paper - Authors "Neuh_user,.; Mugrauer,.; Seifahrt,.; Schmidt,...; Vogt,."
Discovery Paper - Title Astrometric and photometric monitoring of GQ Lupi and its sub-stellar companion
Discovery Paper - Journal "A&A 484, 281-291 (2008)DOI: 10.1051/0004-6361:20078493"
Discovery Paper - URL http://www.aanda.org/articles/aa/pdf/forth/aa8493-07.pdf
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GQ+Lup+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/GQ%20Lup%20b/
GQ Lup b
GQ Lup b

  • GQ Lup b is an exoplanet orbiting the star GQ Lup, located about 456.6 light-years (140.0 pc) away from Solar System. Its discovery was publicly announced on 2005.
  • The host star GQ Lup has apparent magnitude of 11.4, with absolute magnitude of 5.7.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4000 with its spectral types of K7eV
  • (Projected orbit of GQ Lup b around its host star GQ Lup)


  • The Star GQ Lup 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.212 AU ( 31651897.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.292 AU ( 43751193.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.446 AU ( 66667137.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.656 AU ( 98103613.1 km)
  • Radiation at Planetary Boundary of GQ Lup b : 0.11 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GQ Lup)



  • Kopparapu Recent Venus for Star GQ Lup distance : 0.237 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GQ Lup distance : 0.300 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GQ Lup distance : 0.290 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GQ Lup distance : 0.318 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GQ Lup distance : 0.569 AU
  • Kopparapu Outer Boundary for Early Mars for Star GQ Lup distance : 0.601 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GQ Lup)



  • Original Kopparapu Recent Venus for Star GQ Lup distance : 0.234 AU
  • Original Kopparapu Runaway Greenhouse for Star GQ Lup distance : 0.310 AU
  • Original Kopparapu Moist Greenhouse for Star GQ Lup distance : 0.310 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GQ Lup distance : 0.578 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GQ Lup distance : 0.602 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GQ Lup)



    (Position in Stellar Map of star GQ Lup and its Exoplanet GQ Lup b)



    (Zoomed position in Stellar Map of star GQ Lup and its Exoplanet GQ Lup b (zoom level 3))

    (Synthetic Spectrum of star GQ Lup*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102