Imaginary Picture of HD 2039 b

Display orbital revolution of HD 2039 b around the hoststar HD 2039
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Exoplanet Name : HD 2039 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.1100 (Mjup) 1942.6012 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.2300 (AU) 2.2300 (AU Est.)
Eccentricity : 0.6700
Orbital Period(Yrs) 3.0663
Orbital Period(Observed/Estimated) 1120.00 (Days Obs.) 1228.67 (Days Est.)
Surface Gravity (G Earth) 18.7603
Star Radiation at Atmospheric Boundary: 451.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 205.7 (K)
Blackbody T 0.3(K) 193.2 (K)
Blackbody T 0.7(K) 156.3 (K)
Tidally Locked Blackbody T 0.1(K) 244.7 (K)
Tidally Locked Blackbody T 0.3(K) 229.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 2039
Alternate Name :
Star Distance(LY) : 283.6
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 5.3 (GY)
Temperature : 5947 (K)
Spectral type : G2/G3 IV-V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 9.0
Right Ascension(RA) 6.0845
Declination (DEC) -56.6500
Hubble Space Telescope Guide Star Catalog (GSC) ID 08468-00177
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+2039+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%202039%20b/
HD 2039 b
HD 2039 b

  • HD 2039 b is an exoplanet orbiting the star HD 2039, located about 283.6 light-years (87.0 pc) away from Solar System. Its discovery was publicly announced on 2002.
  • The host star HD 2039 has apparent magnitude of 9.0, with absolute magnitude of 4.3.
  • It is 1.0 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5947 with its spectral types of G2/G3 IV-V
  • In this planetary system, the extrasolar planet HD 2039 b orbits around the star HD 2039 every 1120.0 days with its orbital distance of 2.23 AU ( 333603251.7 km)
  • (Projected orbit of HD 2039 b around its host star HD 2039)


  • The Star HD 2039 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.927 AU ( 138688151.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.281 AU ( 191703268.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.953 AU ( 292113358.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.873 AU ( 429857603.0 km)
  • Radiation at Planetary Boundary of HD 2039 b : 451.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 2039)



  • Kopparapu Recent Venus for Star HD 2039 distance : 0.951 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 2039 distance : 1.204 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 2039 distance : 1.163 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 2039 distance : 1.275 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 2039 distance : 2.118 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 2039 distance : 2.234 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 2039)



  • Original Kopparapu Recent Venus for Star HD 2039 distance : 0.956 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 2039 distance : 1.237 AU
  • Original Kopparapu Moist Greenhouse for Star HD 2039 distance : 1.264 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 2039 distance : 2.155 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 2039 distance : 2.241 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 2039)



    (Position in Stellar Map of star HD 2039 and its Exoplanet HD 2039 b)



    (Zoomed position in Stellar Map of star HD 2039 and its Exoplanet HD 2039 b (zoom level 3))

    (Synthetic Spectrum of star HD 2039*)
    *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