Imaginary Picture of Kepler-431 c

Display orbital revolution of Kepler-431 c around the hoststar Kepler-431
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Exoplanet Name : Kepler-431 c
Alternate Name : "KOI-3097 c, 2MASS J18442696+4313400 c, K03097.03, KIC 7582689 c, KOI-3097.03, WISE J184426.95+431340.0 c"
Status : Confirmed
Radius (Rjup / Re): 0.0600 (Rjup) 0.6725 (Rearth)
Mass (Mjup / Me): 0.0008 (Mjup) 0.2414 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0847 (AU) 0.0847 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0238
Orbital Period(Observed/Estimated) 8.70 (Days Obs.) 8.70 (Days Est.)
Surface Gravity (G Earth) 0.5337
Star Radiation at Atmospheric Boundary: 571444.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1227.1 (K)
Blackbody T 0.3(K) 1152.4 (K)
Blackbody T 0.7(K) 932.4 (K)
Tidally Locked Blackbody T 0.1(K) 1459.3 (K)
Tidally Locked Blackbody T 0.3(K) 1370.4 (K)
Size Class: Mars-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-431
Alternate Name : "KOI-3097, 2MASS J18442696+4313400, KIC 7582689, WISE J184426.95+431340.0"
Star Distance(LY) : 1586.4
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5976 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 2.5
Apparent Magnitude: 10.9
Right Ascension(RA) 281.1123
Declination (DEC) 43.2278
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Everett,ark.; Barclay,homas; Ciardi,avid.; Horch,lliott.; Howell,teve.; Crepp,ustin.; Silva,avid."
Discovery Paper - Title High-Resolution Multi-Band Imaging for Validation and Characterization of Small Kepler Planets
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-431%20c/
Kepler-431 c
Kepler-431 c

  • Kepler-431 c is an exoplanet orbiting the star Kepler-431, located about 1586.4 light-years (486.4 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star Kepler-431 has apparent magnitude of 10.9, with absolute magnitude of 2.5.
  • It is 1.1 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5976 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-431 c orbits around the star Kepler-431 every 8.7 days with its orbital distance of 0.08 AU ( 12670939.6 km)
  • (Projected orbit of Kepler-431 c around its host star Kepler-431)


  • The Star Kepler-431 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.253 AU ( 187381253.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.731 AU ( 259009860.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.638 AU ( 394673708.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.882 AU ( 580779651.4 km)
  • Radiation at Planetary Boundary of Kepler-431 c : 571444.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-431)



  • Kopparapu Recent Venus for Star Kepler-431 distance : 1.283 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-431 distance : 1.624 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-431 distance : 1.569 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-431 distance : 1.720 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-431 distance : 2.854 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-431 distance : 3.011 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-431)



  • Original Kopparapu Recent Venus for Star Kepler-431 distance : 1.290 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-431 distance : 1.668 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-431 distance : 1.706 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-431 distance : 2.905 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-431 distance : 3.021 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-431)



    (Position in Stellar Map of star Kepler-431 and its Exoplanet Kepler-431 c)



    (Zoomed position in Stellar Map of star Kepler-431 and its Exoplanet Kepler-431 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-431*)
    *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