Imaginary Picture of HD 238914 b
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Exoplanet Name : HD 238914 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.0000 (Mjup) 1907.6280 (Mearth)
Semi Major Axis / Orbital Distance Calculated 5.7000 (AU) 5.7000 (AU Est.)
Eccentricity : 0.5600
Orbital Period(Yrs) 11.2249
Orbital Period(Observed/Estimated) 4100.00 (Days Obs.) 4099.62 (Days Est.)
Star Radiation at Atmospheric Boundary: 3163.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 334.7 (K)
Blackbody T 0.3(K) 314.3 (K)
Blackbody T 0.7(K) 254.3 (K)
Tidally Locked Blackbody T 0.1(K) 398.1 (K)
Tidally Locked Blackbody T 0.3(K) 373.8 (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 238914
Alternate Name :
Star Distance(LY) : 1924.3
Stellar Radius(Rsun) : 12.7 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4769 (K)
Spectral type : K7
Metalicity : -0.2
Absolute Magnitude: 3.1
Apparent Magnitude: 12.0
Right Ascension(RA) 279.5842
Declination (DEC) 59.2539
Hubble Space Telescope Guide Star Catalog (GSC) ID 03917-01107
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+238914+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 238914 b
HD 238914 b

  • HD 238914 b is an exoplanet orbiting the star HD 238914, located about 1924.3 light-years (590.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HD 238914 has apparent magnitude of 12.0, with absolute magnitude of 3.1.
  • It is 1.5 times more massive and 12.7 times bigger compared with our Sun. The surface temperature is 4769 with its spectral types of K7
  • In this planetary system, the extrasolar planet HD 238914 b orbits around the star HD 238914 every 4100.0 days with its orbital distance of 5.70 AU ( 852707863.0 km)
  • (Projected orbit of HD 238914 b around its host star HD 238914)


  • The Star HD 238914 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 6.272 AU ( 938298800.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 8.670 AU ( 1296974148.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 13.211 AU ( 1976301582.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 19.440 AU ( 2908214355.2 km)
  • Radiation at Planetary Boundary of HD 238914 b : 3163.89 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 238914)



  • Kopparapu Recent Venus for Star HD 238914 distance : 6.856 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 238914 distance : 8.680 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 238914 distance : 8.384 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 238914 distance : 9.204 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 238914 distance : 15.884 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 238914 distance : 16.755 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 238914)



  • Original Kopparapu Recent Venus for Star HD 238914 distance : 6.771 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 238914 distance : 8.952 AU
  • Original Kopparapu Moist Greenhouse for Star HD 238914 distance : 8.960 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 238914 distance : 16.147 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 238914 distance : 16.792 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 238914)



    (Position in Stellar Map of star HD 238914 and its Exoplanet HD 238914 b)



    (Zoomed position in Stellar Map of star HD 238914 and its Exoplanet HD 238914 b (zoom level 3))