Imaginary Picture of HD 100655 b

Display orbital revolution of HD 100655 b around the hoststar HD 100655
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Exoplanet Name : HD 100655 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.7000 (Mjup) 540.4946 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.7600 (AU) 0.7600 (AU Est.)
Eccentricity : 0.0850
Orbital Period(Yrs) 0.4314
Orbital Period(Observed/Estimated) 157.57 (Days Obs.) 156.21 (Days Est.)
Surface Gravity (G Earth) 5.2197
Star Radiation at Atmospheric Boundary: 102528.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 798.6 (K)
Blackbody T 0.3(K) 750.0 (K)
Blackbody T 0.7(K) 606.8 (K)
Tidally Locked Blackbody T 0.1(K) 949.8 (K)
Tidally Locked Blackbody T 0.3(K) 891.9 (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 100655
Alternate Name :
Star Distance(LY) : 398.7
Stellar Radius(Rsun) : 9.3 (Rsun Measured)
Stellar Mass(Msun) : 2.4 (Msun Measured) 2.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4861 (K)
Spectral type : G9III
UV portion[%]: 2.6
Visible portion[%]: 35.8
IR portion[%]: 61.5
Metalicity : 0.1
Absolute Magnitude: 1.0
Apparent Magnitude: 6.5
Right Ascension(RA) 173.7656
Declination (DEC) 20.4417
Hubble Space Telescope Guide Star Catalog (GSC) ID 01440-02597
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+100655+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20100655%20b/
HD 100655 b
HD 100655 b

  • HD 100655 b is an exoplanet orbiting the star HD 100655, located about 398.7 light-years (122.2 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 100655 has apparent magnitude of 6.5, with absolute magnitude of 1.0.
  • It is 2.4 times more massive and 9.3 times bigger compared with our Sun. The surface temperature is 4861 with its spectral types of G9III
  • In this planetary system, the extrasolar planet HD 100655 b orbits around the star HD 100655 every 157.6 days with its orbital distance of 0.76 AU ( 113694381.7 km)
  • (Projected orbit of HD 100655 b around its host star HD 100655)


  • The Star HD 100655 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.761 AU ( 712184148.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 6.580 AU ( 984424609.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 10.027 AU ( 1500045251.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 14.755 AU ( 2207382301.0 km)
  • Radiation at Planetary Boundary of HD 100655 b : 102528.83 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 100655)



  • Kopparapu Recent Venus for Star HD 100655 distance : 5.183 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 100655 distance : 6.562 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 100655 distance : 6.338 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 100655 distance : 6.957 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 100655 distance : 11.962 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 100655 distance : 12.617 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 100655)



  • Original Kopparapu Recent Venus for Star HD 100655 distance : 5.122 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 100655 distance : 6.766 AU
  • Original Kopparapu Moist Greenhouse for Star HD 100655 distance : 6.778 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 100655 distance : 12.161 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 100655 distance : 12.647 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 100655)



    (Position in Stellar Map of star HD 100655 and its Exoplanet HD 100655 b)



    (Zoomed position in Stellar Map of star HD 100655 and its Exoplanet HD 100655 b (zoom level 3))

    (Synthetic Spectrum of star HD 100655*)
    *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