Imaginary Picture of Kepler-80 g

Display orbital revolution of Kepler-80 g around the hoststar Kepler-80
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Exoplanet Name : Kepler-80 g
Alternate Name : "2MASS J19442701+3958436 g, KIC 4852528 g, KOI-500 g, WISE J194427.01+395843.5 g"
Status : Confirmed
Radius (Rjup / Re): 0.1010 (Rjup) 1.1321 (Rearth)
Mass (Mjup / Me): 0.0048 (Mjup) 1.5282 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1400 (AU) 0.1400 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0401
Orbital Period(Observed/Estimated) 14.65 (Days Obs.) 22.39 (Days Est.)
Surface Gravity (G Earth) 1.1924
Star Radiation at Atmospheric Boundary: 12291.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 469.9 (K)
Blackbody T 0.3(K) 441.3 (K)
Blackbody T 0.7(K) 357.1 (K)
Tidally Locked Blackbody T 0.1(K) 558.9 (K)
Tidally Locked Blackbody T 0.3(K) 524.8 (K)
Size Class: Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-80
Alternate Name : "KOI-500, 2MASS J19442701+3958436, KIC 4852528, WISE J194427.01+395843.5"
Star Distance(LY) : 1164.4
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 1.7 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 4540 (K)
Spectral type : K5
UV portion[%]: 1.7
Visible portion[%]: 31.8
IR portion[%]: 66.5
Metalicity : 0.0
Absolute Magnitude: 7.2
Apparent Magnitude: 15.0
Right Ascension(RA) 296.1126
Declination (DEC) 39.9788
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=kepler-80+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-80%20g/
Kepler-80 g
Kepler-80 g

  • Kepler-80 g is an exoplanet orbiting the star Kepler-80, located about 1164.4 light-years (357.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-80 has apparent magnitude of 15.0, with absolute magnitude of 7.2.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4540 with its spectral types of K5
  • In this planetary system, the extrasolar planet Kepler-80 g orbits around the star Kepler-80 every 14.6 days with its orbital distance of 0.14 AU ( 20943701.9 km)
  • (Projected orbit of Kepler-80 g around its host star Kepler-80)


  • The Star Kepler-80 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.304 AU ( 45423305.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.420 AU ( 62786878.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.640 AU ( 95673307.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.941 AU ( 140787463.2 km)
  • Radiation at Planetary Boundary of Kepler-80 g : 12291.08 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-80)



  • Kopparapu Recent Venus for Star Kepler-80 distance : 0.335 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-80 distance : 0.424 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-80 distance : 0.409 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-80 distance : 0.450 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-80 distance : 0.784 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-80 distance : 0.827 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-80)



  • Original Kopparapu Recent Venus for Star Kepler-80 distance : 0.330 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-80 distance : 0.438 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-80 distance : 0.437 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-80 distance : 0.797 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-80 distance : 0.828 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-80)



    (Position in Stellar Map of star Kepler-80 and its Exoplanet Kepler-80 g)



    (Zoomed position in Stellar Map of star Kepler-80 and its Exoplanet Kepler-80 g (zoom level 3))

    (Synthetic Spectrum of star Kepler-80*)
    *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