Imaginary Picture of Kepler-80 c

Display orbital revolution of Kepler-80 c around the hoststar Kepler-80
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Exoplanet Name : Kepler-80 c
Alternate Name : "KOI-500 c, 2MASS J19442701+3958436 c, K00500.02, KIC 4852528 c, KOI-500.02, WISE J194427.01+395843.5 c"
Status : Confirmed
Radius (Rjup / Re): 0.2440 (Rjup) 2.7350 (Rearth)
Mass (Mjup / Me): 0.0212 (Mjup) 6.7435 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0792 (AU) 0.0792 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0261
Orbital Period(Observed/Estimated) 9.52 (Days Obs.) 9.53 (Days Est.)
Surface Gravity (G Earth) 0.9015
Star Radiation at Atmospheric Boundary: 42939.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 642.5 (K)
Blackbody T 0.3(K) 603.4 (K)
Blackbody T 0.7(K) 488.2 (K)
Tidally Locked Blackbody T 0.1(K) 764.0 (K)
Tidally Locked Blackbody T 0.3(K) 717.5 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : TTV
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) : 1204.7
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 4665 (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 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
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%20c/
Kepler-80 c
Kepler-80 c

  • Kepler-80 c is an exoplanet orbiting the star Kepler-80, located about 1204.7 light-years (369.3 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • 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 4665 with its spectral types of K5
  • In this planetary system, the extrasolar planet Kepler-80 c orbits around the star Kepler-80 every 9.5 days with its orbital distance of 0.08 AU ( 11848151.4 km)
  • (Projected orbit of Kepler-80 c 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 ) : 0.321 AU ( 48029550.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.444 AU ( 66389390.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.676 AU ( 101162738.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.995 AU ( 148865401.6 km)
  • Radiation at Planetary Boundary of Kepler-80 c : 42939.33 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 : 0.352 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-80 distance : 0.446 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-80 distance : 0.431 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-80 distance : 0.473 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-80 distance : 0.820 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-80 distance : 0.865 AU

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



  • Original Kopparapu Recent Venus for Star Kepler-80 distance : 0.348 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-80 distance : 0.460 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-80 distance : 0.460 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-80 distance : 0.834 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-80 distance : 0.867 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 c)



    (Zoomed position in Stellar Map of star Kepler-80 and its Exoplanet Kepler-80 c (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