Imaginary Picture of HD 231701 b

Display orbital revolution of HD 231701 b around the hoststar HD 231701
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Exoplanet Name : HD 231701 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.0800 (Mjup) 343.3730 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5300 (AU) 0.5300 (AU Est.)
Eccentricity : 0.0960
Orbital Period(Yrs) 0.3885
Orbital Period(Observed/Estimated) 141.89 (Days Obs.) 131.99 (Days Est.)
Surface Gravity (G Earth) 3.3161
Star Radiation at Atmospheric Boundary: 11817.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 465.3 (K)
Blackbody T 0.3(K) 437.0 (K)
Blackbody T 0.7(K) 353.6 (K)
Tidally Locked Blackbody T 0.1(K) 553.4 (K)
Tidally Locked Blackbody T 0.3(K) 519.7 (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 231701
Alternate Name :
Star Distance(LY) : 358.8
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.9 (GY)
Temperature : 6208 (K)
Spectral type : F8V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 3.8
Apparent Magnitude: 9.0
Right Ascension(RA) 293.0173
Declination (DEC) 16.4742
Hubble Space Telescope Guide Star Catalog (GSC) ID 01601-01129
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+231701+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20231701%20b/
HD 231701 b
HD 231701 b

  • HD 231701 b is an exoplanet orbiting the star HD 231701, located about 358.8 light-years (110.0 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star HD 231701 has apparent magnitude of 9.0, with absolute magnitude of 3.8.
  • It is 1.1 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 6208 with its spectral types of F8V
  • In this planetary system, the extrasolar planet HD 231701 b orbits around the star HD 231701 every 141.9 days with its orbital distance of 0.53 AU ( 79286871.5 km)
  • (Projected orbit of HD 231701 b around its host star HD 231701)


  • The Star HD 231701 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.127 AU ( 168614646.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.558 AU ( 233069506.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.374 AU ( 355146349.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.493 AU ( 522613411.2 km)
  • Radiation at Planetary Boundary of HD 231701 b : 11817.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 231701)



  • Kopparapu Recent Venus for Star HD 231701 distance : 1.138 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 231701 distance : 1.441 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 231701 distance : 1.392 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 231701 distance : 1.525 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 231701 distance : 2.520 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 231701 distance : 2.658 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 231701)



  • Original Kopparapu Recent Venus for Star HD 231701 distance : 1.150 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 231701 distance : 1.479 AU
  • Original Kopparapu Moist Greenhouse for Star HD 231701 distance : 1.522 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 231701 distance : 2.565 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 231701 distance : 2.668 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 231701)



    (Position in Stellar Map of star HD 231701 and its Exoplanet HD 231701 b)



    (Zoomed position in Stellar Map of star HD 231701 and its Exoplanet HD 231701 b (zoom level 3))

    (Synthetic Spectrum of star HD 231701*)
    *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