Imaginary Picture of HATS-39 b
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Exoplanet Name : HATS-39 b
Alternate Name :
Radius (Rjup / Re): 1.5700 (Rjup) 17.5981 (Rearth)
Mass (Mjup / Me): 0.6300 (Mjup) 200.3009 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0600 (AU) 0.0600 (AU Est.)
Eccentricity : 0.2750
Orbital Period(Yrs) 0.0125
Orbital Period(Observed/Estimated) 4.58 (Days Obs.) 4.57 (Days Est.)
Star Radiation at Atmospheric Boundary: 1669777.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1604.4 (K)
Blackbody T 0.3(K) 1506.7 (K)
Blackbody T 0.7(K) 1219.1 (K)
Tidally Locked Blackbody T 0.1(K) 1907.9 (K)
Tidally Locked Blackbody T 0.3(K) 1791.8 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HATS-39
Alternate Name :
Star Distance(LY) : 2521.2
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 2.1 (GY)
Temperature : 6572 (K)
Spectral type : F6
Metalicity : 0.0
Absolute Magnitude: 3.3
Apparent Magnitude: 12.8
Right Ascension(RA) 112.4208
Declination (DEC) -29.9378
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
HATS-39 b
HATS-39 b

  • HATS-39 b is an exoplanet orbiting the star HATS-39, located about 2521.2 light-years (773.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HATS-39 has apparent magnitude of 12.8, with absolute magnitude of 3.3.
  • It is 1.4 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6572 with its spectral types of F6
  • In this planetary system, the extrasolar planet HATS-39 b orbits around the star HATS-39 every 4.6 days with its orbital distance of 0.06 AU ( 8975872.2 km)
  • (Projected orbit of HATS-39 b around its host star HATS-39)


  • The Star HATS-39 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.517 AU ( 226900909.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.097 AU ( 313636353.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.195 AU ( 477912394.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.701 AU ( 703269025.1 km)
  • Radiation at Planetary Boundary of HATS-39 b : 1669777.32 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-39)



  • Kopparapu Recent Venus for Star HATS-39 distance : 1.499 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-39 distance : 1.898 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-39 distance : 1.833 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-39 distance : 2.008 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-39 distance : 3.299 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-39 distance : 3.479 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-39)



  • Original Kopparapu Recent Venus for Star HATS-39 distance : 1.527 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-39 distance : 1.946 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-39 distance : 2.020 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-39 distance : 3.359 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-39 distance : 3.493 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-39)



    (Position in Stellar Map of star HATS-39 and its Exoplanet HATS-39 b)



    (Zoomed position in Stellar Map of star HATS-39 and its Exoplanet HATS-39 b (zoom level 3))