Imaginary Picture of HD 102365 A b

Display orbital revolution of HD 102365 A b around the hoststar HD 102365 A
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Exoplanet Name : HD 102365 A b
Alternate Name : HD 102365 b
Status : Confirmed
Radius (Rjup / Re): 0.2187 (Rjup) 2.4512 (Rearth)
Mass (Mjup / Me): 0.0500 (Mjup) 15.8969 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.4600 (AU) 0.4600 (AU Est.)
Eccentricity : 0.3400
Orbital Period(Yrs) 0.3343
Orbital Period(Observed/Estimated) 122.10 (Days Obs.) 123.60 (Days Est.)
Surface Gravity (G Earth) 2.6458
Star Radiation at Atmospheric Boundary: 3445.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 341.9 (K)
Blackbody T 0.3(K) 321.1 (K)
Blackbody T 0.7(K) 259.8 (K)
Tidally Locked Blackbody T 0.1(K) 406.6 (K)
Tidally Locked Blackbody T 0.3(K) 381.9 (K)
Size Class: sub-Neptune-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 102365 A
Alternate Name : HD 102365
Star Distance(LY) : 30.1
Stellar Radius(Rsun) : 0.8 (Rsun Estimated)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 9.0 (GY)
Temperature : 5650 (K)
Spectral type : G2V
UV portion[%]: 7.4
Visible portion[%]: 44.1
IR portion[%]: 48.4
Metalicity : -0.3
Absolute Magnitude: 5.1
Apparent Magnitude: 4.9
Right Ascension(RA) 176.6295
Declination (DEC) -40.5003
Hubble Space Telescope Guide Star Catalog (GSC) ID
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+102365+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20102365%20b/
HD 102365 A b
HD 102365 A b

  • HD 102365 A b is an exoplanet orbiting the star HD 102365 A, located about 30.1 light-years ( 9.2 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 102365 A has apparent magnitude of 4.9, with absolute magnitude of 5.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5650 with its spectral types of G2V
  • In this planetary system, the extrasolar planet HD 102365 A b orbits around the star HD 102365 A every 122.1 days with its orbital distance of 0.46 AU ( 68815020.5 km)
  • (Projected orbit of HD 102365 A b around its host star HD 102365 A)


  • The Star HD 102365 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.528 AU ( 79015604.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.730 AU ( 109220215.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.112 AU ( 166427437.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.637 AU ( 244905264.9 km)
  • Radiation at Planetary Boundary of HD 102365 A b : 3445.07 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 102365 A)



  • Kopparapu Recent Venus for Star HD 102365 A distance : 0.552 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 102365 A distance : 0.699 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 102365 A distance : 0.675 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 102365 A distance : 0.740 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 102365 A distance : 1.238 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 102365 A distance : 1.306 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 102365 A)



  • Original Kopparapu Recent Venus for Star HD 102365 A distance : 0.551 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 102365 A distance : 0.718 AU
  • Original Kopparapu Moist Greenhouse for Star HD 102365 A distance : 0.729 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 102365 A distance : 1.260 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 102365 A distance : 1.310 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 102365 A)



    (Position in Stellar Map of star HD 102365 A and its Exoplanet HD 102365 A b)



    (Zoomed position in Stellar Map of star HD 102365 A and its Exoplanet HD 102365 A b (zoom level 3))

    (Synthetic Spectrum of star HD 102365 A*)
    *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