Imaginary Picture of HD 215456 c

Display orbital revolution of HD 215456 c around the hoststar HD 215456
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Exoplanet Name : HD 215456 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.2460 (Mjup) 78.2127 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.3940 (AU) 3.3940 (AU Est.)
Eccentricity : 0.1900
Orbital Period(Yrs) 6.2339
Orbital Period(Observed/Estimated) 2277.00 (Days Obs.) 3024.97 (Days Est.)
Surface Gravity (G Earth) 0.7553
Star Radiation at Atmospheric Boundary: 142.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 154.2 (K)
Blackbody T 0.3(K) 144.8 (K)
Blackbody T 0.7(K) 117.1 (K)
Tidally Locked Blackbody T 0.1(K) 183.3 (K)
Tidally Locked Blackbody T 0.3(K) 172.2 (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 215456
Alternate Name :
Star Distance(LY) : 129.0
Stellar Radius(Rsun) : 1.0 (Rsun Estimated)
Stellar Mass(Msun) : 0.6 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6050 (K)
Spectral type : G0.5V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 6.6
Right Ascension(RA) 341.5333
Declination (DEC) -48.9678
Hubble Space Telescope Guide Star Catalog (GSC) ID 08450-00751
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+215456+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20215456%20c/
HD 215456 c
HD 215456 c

  • HD 215456 c is an exoplanet orbiting the star HD 215456, located about 129.0 light-years (39.5 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 215456 has apparent magnitude of 6.6, with absolute magnitude of 3.6.
  • It is 0.6 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6050 with its spectral types of G0.5V
  • In this planetary system, the extrasolar planet HD 215456 c orbits around the star HD 215456 every 2277.0 days with its orbital distance of 3.39 AU ( 507735173.2 km)
  • (Projected orbit of HD 215456 c around its host star HD 215456)


  • The Star HD 215456 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.792 AU ( 118523320.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.095 AU ( 163830203.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.669 AU ( 249640973.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.456 AU ( 367357629.0 km)
  • Radiation at Planetary Boundary of HD 215456 c : 142.39 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 215456)



  • Kopparapu Recent Venus for Star HD 215456 distance : 0.808 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 215456 distance : 1.023 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 215456 distance : 0.988 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 215456 distance : 1.083 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 215456 distance : 1.794 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 215456 distance : 1.893 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 215456)



  • Original Kopparapu Recent Venus for Star HD 215456 distance : 0.813 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 215456 distance : 1.050 AU
  • Original Kopparapu Moist Greenhouse for Star HD 215456 distance : 1.076 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 215456 distance : 1.826 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 215456 distance : 1.899 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 215456)



    (Position in Stellar Map of star HD 215456 and its Exoplanet HD 215456 c)



    (Zoomed position in Stellar Map of star HD 215456 and its Exoplanet HD 215456 c (zoom level 3))

    (Synthetic Spectrum of star HD 215456*)
    *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