Imaginary Picture of HD 102117 b

Display orbital revolution of HD 102117 b around the hoststar HD 102117
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Exoplanet Name : HD 102117 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.1720 (Mjup) 54.6853 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1532 (AU) 0.1532 (AU Est.)
Eccentricity : 0.1060
Orbital Period(Yrs) 0.0566
Orbital Period(Observed/Estimated) 20.67 (Days Obs.) 21.58 (Days Est.)
Surface Gravity (G Earth) 0.5281
Star Radiation at Atmospheric Boundary: 87224.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 767.0 (K)
Blackbody T 0.3(K) 720.3 (K)
Blackbody T 0.7(K) 582.8 (K)
Tidally Locked Blackbody T 0.1(K) 912.1 (K)
Tidally Locked Blackbody T 0.3(K) 856.6 (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 102117
Alternate Name :
Star Distance(LY) : 128.8
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 6.2 (GY)
Temperature : 5672 (K)
Spectral type : G6V
UV portion[%]: 7.5
Visible portion[%]: 44.3
IR portion[%]: 48.2
Metalicity : 0.3
Absolute Magnitude: 4.5
Apparent Magnitude: 7.5
Right Ascension(RA) 176.2103
Declination (DEC) -58.7036
Hubble Space Telescope Guide Star Catalog (GSC) ID 08642-00742
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+102117+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20102117%20b/
HD 102117 b
HD 102117 b

  • HD 102117 b is an exoplanet orbiting the star HD 102117, located about 128.8 light-years (39.5 pc) away from Solar System. Its discovery was publicly announced on 2004.
  • The host star HD 102117 has apparent magnitude of 7.5, with absolute magnitude of 4.5.
  • It is 1.0 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5672 with its spectral types of G6V
  • In this planetary system, the extrasolar planet HD 102117 b orbits around the star HD 102117 every 20.7 days with its orbital distance of 0.15 AU ( 22918393.8 km)
  • (Projected orbit of HD 102117 b around its host star HD 102117)


  • The Star HD 102117 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.885 AU ( 132414113.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.223 AU ( 183030909.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.864 AU ( 278898600.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.743 AU ( 410411508.6 km)
  • Radiation at Planetary Boundary of HD 102117 b : 87224.73 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 102117)



  • Kopparapu Recent Venus for Star HD 102117 distance : 0.923 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 102117 distance : 1.169 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 102117 distance : 1.129 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 102117 distance : 1.238 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 102117 distance : 2.071 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 102117 distance : 2.184 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 102117)



  • Original Kopparapu Recent Venus for Star HD 102117 distance : 0.923 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 102117 distance : 1.202 AU
  • Original Kopparapu Moist Greenhouse for Star HD 102117 distance : 1.221 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 102117 distance : 2.107 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 102117 distance : 2.191 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 102117)



    (Position in Stellar Map of star HD 102117 and its Exoplanet HD 102117 b)



    (Zoomed position in Stellar Map of star HD 102117 and its Exoplanet HD 102117 b (zoom level 3))

    (Synthetic Spectrum of star HD 102117*)
    *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