Imaginary Picture of HD 222155 b

Display orbital revolution of HD 222155 b around the hoststar HD 222155
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Exoplanet Name : HD 222155 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.9000 (Mjup) 604.0822 (Mearth)
Semi Major Axis / Orbital Distance Calculated 5.1000 (AU) 5.1000 (AU Est.)
Eccentricity : 0.1600
Orbital Period(Yrs) 10.9484
Orbital Period(Observed/Estimated) 3999.00 (Days Obs.) 3957.37 (Days Est.)
Surface Gravity (G Earth) 5.8338
Star Radiation at Atmospheric Boundary: 145.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 154.9 (K)
Blackbody T 0.3(K) 145.5 (K)
Blackbody T 0.7(K) 117.7 (K)
Tidally Locked Blackbody T 0.1(K) 184.3 (K)
Tidally Locked Blackbody T 0.3(K) 173.0 (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 222155
Alternate Name :
Star Distance(LY) : 166.8
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 8.2 (GY)
Temperature : 5765 (K)
Spectral type : G2V
UV portion[%]: 7.8
Visible portion[%]: 44.7
IR portion[%]: 47.5
Metalicity : -0.1
Absolute Magnitude: 3.6
Apparent Magnitude: 7.1
Right Ascension(RA) 354.5013
Declination (DEC) 48.9964
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+222155+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20222155%20b/
HD 222155 b
HD 222155 b

  • HD 222155 b is an exoplanet orbiting the star HD 222155, located about 166.8 light-years (51.2 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star HD 222155 has apparent magnitude of 7.1, with absolute magnitude of 3.6.
  • It is 1.1 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 5765 with its spectral types of G2V
  • In this planetary system, the extrasolar planet HD 222155 b orbits around the star HD 222155 every 3999.0 days with its orbital distance of 5.10 AU ( 762949140.6 km)
  • (Projected orbit of HD 222155 b around its host star HD 222155)


  • The Star HD 222155 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.202 AU ( 179875994.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.662 AU ( 248635630.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.533 AU ( 378865678.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.727 AU ( 557517443.1 km)
  • Radiation at Planetary Boundary of HD 222155 b : 145.24 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 222155)



  • Kopparapu Recent Venus for Star HD 222155 distance : 1.247 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 222155 distance : 1.579 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 222155 distance : 1.525 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 222155 distance : 1.672 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 222155 distance : 2.790 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 222155 distance : 2.943 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 222155)



  • Original Kopparapu Recent Venus for Star HD 222155 distance : 1.248 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 222155 distance : 1.623 AU
  • Original Kopparapu Moist Greenhouse for Star HD 222155 distance : 1.652 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 222155 distance : 2.839 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 222155 distance : 2.952 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 222155)



    (Position in Stellar Map of star HD 222155 and its Exoplanet HD 222155 b)



    (Zoomed position in Stellar Map of star HD 222155 and its Exoplanet HD 222155 b (zoom level 3))

    (Synthetic Spectrum of star HD 222155*)
    *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