Imaginary Picture of HD 108202 b

Display orbital revolution of HD 108202 b around the hoststar HD 108202
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Exoplanet Name : HD 108202 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 3.0000 (Mjup) 953.8140 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.7000 (AU) 3.7000 (AU Est.)
Eccentricity : 0.5200
Orbital Period(Yrs) 8.1859
Orbital Period(Observed/Estimated) 2990.00 (Days Obs.) 3021.88 (Days Est.)
Surface Gravity (G Earth) 9.2113
Star Radiation at Atmospheric Boundary: 16.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 89.7 (K)
Blackbody T 0.3(K) 84.3 (K)
Blackbody T 0.7(K) 68.2 (K)
Tidally Locked Blackbody T 0.1(K) 106.7 (K)
Tidally Locked Blackbody T 0.3(K) 100.2 (K)
Size Class: Jupiter-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 108202
Alternate Name :
Star Distance(LY) : 126.1
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 6.5 (GY)
Temperature : 4600 (K)
Spectral type : K4/5V
UV portion[%]: 1.9
Visible portion[%]: 32.7
IR portion[%]: 65.4
Metalicity : 0.0
Absolute Magnitude: 7.3
Apparent Magnitude: 10.2
Right Ascension(RA) 186.4625
Declination (DEC) -1.1106
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
HD 108202 b
HD 108202 b

  • HD 108202 b is an exoplanet orbiting the star HD 108202, located about 126.1 light-years (38.6 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star HD 108202 has apparent magnitude of 10.2, with absolute magnitude of 7.3.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4600 with its spectral types of K4/5V
  • In this planetary system, the extrasolar planet HD 108202 b orbits around the star HD 108202 every 2990.0 days with its orbital distance of 3.70 AU ( 553512121.6 km)
  • (Projected orbit of HD 108202 b around its host star HD 108202)


  • The Star HD 108202 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.293 AU ( 43769393.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.404 AU ( 60500740.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.616 AU ( 92189739.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.907 AU ( 135661239.9 km)
  • Radiation at Planetary Boundary of HD 108202 b : 16.34 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 108202)



  • Kopparapu Recent Venus for Star HD 108202 distance : 0.322 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 108202 distance : 0.408 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 108202 distance : 0.394 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 108202 distance : 0.432 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 108202 distance : 0.752 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 108202 distance : 0.793 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 108202)



  • Original Kopparapu Recent Venus for Star HD 108202 distance : 0.318 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 108202 distance : 0.421 AU
  • Original Kopparapu Moist Greenhouse for Star HD 108202 distance : 0.420 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 108202 distance : 0.764 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 108202 distance : 0.794 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 108202)



    (Position in Stellar Map of star HD 108202 and its Exoplanet HD 108202 b)



    (Zoomed position in Stellar Map of star HD 108202 and its Exoplanet HD 108202 b (zoom level 3))

    (Synthetic Spectrum of star HD 108202*)
    *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