Imaginary Picture of HD 24085 b
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Exoplanet Name : HD 24085 b
Alternate Name :
Radius (Rjup / Re): 0.2042 (Rjup) 2.2886 (Rearth)
Mass (Mjup / Me): 0.0371 (Mjup) 11.7955 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0340 (AU) 0.0340 (AU Est.)
Eccentricity : 0.2200
Orbital Period(Yrs) 0.0056
Orbital Period(Observed/Estimated) 2.05 (Days Obs.) 2.07 (Days Est.)
Star Radiation at Atmospheric Boundary: 1855324.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1647.2 (K)
Blackbody T 0.3(K) 1546.9 (K)
Blackbody T 0.7(K) 1251.6 (K)
Tidally Locked Blackbody T 0.1(K) 1958.9 (K)
Tidally Locked Blackbody T 0.3(K) 1839.6 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 24085
Alternate Name :
Star Distance(LY) : 179.3
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6034 (K)
Spectral type : G0V
Metalicity : 0.0
Absolute Magnitude: 18.3
Apparent Magnitude: 22.0
Right Ascension(RA) 56.2565
Declination (DEC) -70.0200
Hubble Space Telescope Guide Star Catalog (GSC) ID 09156-00742
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+24085+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 24085 b
HD 24085 b

  • HD 24085 b is an exoplanet orbiting the star HD 24085, located about 179.3 light-years (55.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star HD 24085 has apparent magnitude of 22.0, with absolute magnitude of 18.3.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6034 with its spectral types of G0V
  • In this planetary system, the extrasolar planet HD 24085 b orbits around the star HD 24085 every 2.0 days with its orbital distance of 0.03 AU ( 5086327.6 km)
  • (Projected orbit of HD 24085 b around its host star HD 24085)


  • The Star HD 24085 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.906 AU ( 135532842.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.252 AU ( 187341807.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.908 AU ( 285467455.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.808 AU ( 420077865.9 km)
  • Radiation at Planetary Boundary of HD 24085 b : 1855324.35 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 24085)



  • Kopparapu Recent Venus for Star HD 24085 distance : 0.925 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 24085 distance : 1.171 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 24085 distance : 1.131 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 24085 distance : 1.239 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 24085 distance : 2.055 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 24085 distance : 2.167 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 24085)



  • Original Kopparapu Recent Venus for Star HD 24085 distance : 0.931 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 24085 distance : 1.202 AU
  • Original Kopparapu Moist Greenhouse for Star HD 24085 distance : 1.231 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 24085 distance : 2.091 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 24085 distance : 2.175 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 24085)



    (Position in Stellar Map of star HD 24085 and its Exoplanet HD 24085 b)



    (Zoomed position in Stellar Map of star HD 24085 and its Exoplanet HD 24085 b (zoom level 3))