Imaginary Picture of Kepler-427 b

Display orbital revolution of Kepler-427 b around the hoststar Kepler-427
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Exoplanet Name : Kepler-427 b
Alternate Name : "Kepler-4ee b, 2MASS J19130109+4342175 b, K00192.01, KIC 7950644 b, KOI-192 b, KOI-192.01, WISE J191301.09+434217.4 b"
Radius (Rjup / Re): 1.2300 (Rjup) 13.7871 (Rearth)
Mass (Mjup / Me): 0.2900 (Mjup) 92.2020 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0910 (AU) 0.0910 (AU Est.)
Eccentricity : 0.5700
Orbital Period(Yrs) 0.0282
Orbital Period(Observed/Estimated) 10.29 (Days Obs.) 10.23 (Days Est.)
Surface Gravity (G Earth) 0.4851
Star Radiation at Atmospheric Boundary: 282347.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1028.8 (K)
Blackbody T 0.3(K) 966.2 (K)
Blackbody T 0.7(K) 781.7 (K)
Tidally Locked Blackbody T 0.1(K) 1223.5 (K)
Tidally Locked Blackbody T 0.3(K) 1149.0 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-427
Alternate Name : "2MASS J19130109+4342175, KIC 7950644, KOI-192, WISE J191301.09+434217.4"
Star Distance(LY) : 3318.1
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 7.0 (GY)
Temperature : 5800 (K)
Spectral type : G2 V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.2
Absolute Magnitude: 4.5
Apparent Magnitude: 14.5
Right Ascension(RA) 288.2546
Declination (DEC) 43.7049
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "G. Hebrard, A. Santerne, G. Montagnier, G. Bruno, M. Deleuil, M. Havel, J.-M. Almenara, C. Damiani, S.C.C. Barros, A.S. Bonomo, F. Bouchy, R.F. Diaz, C. Moutou"
Discovery Paper - Title "Characterization of the four new transiting planets KOI-188b, KOI-195b, KOI-192b, and KOI-830b"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KOI-192+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/KOI-192%20b/
Kepler-427 b
Kepler-427 b

  • Kepler-427 b is an exoplanet orbiting the star Kepler-427, located about 3318.1 light-years (1017.3 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-427 has apparent magnitude of 14.5, with absolute magnitude of 4.5.
  • It is 1.0 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5800 with its spectral types of G2 V
  • In this planetary system, the extrasolar planet Kepler-427 b orbits around the star Kepler-427 every 10.3 days with its orbital distance of 0.09 AU ( 13613406.2 km)
  • (Projected orbit of Kepler-427 b around its host star Kepler-427)


  • The Star Kepler-427 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.946 AU ( 141510541.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.308 AU ( 195604549.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.992 AU ( 298058045.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.932 AU ( 438605471.3 km)
  • Radiation at Planetary Boundary of Kepler-427 b : 282347.13 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-427)



  • Kopparapu Recent Venus for Star Kepler-427 distance : 0.979 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-427 distance : 1.240 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-427 distance : 1.198 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-427 distance : 1.313 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-427 distance : 2.188 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-427 distance : 2.308 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-427)



  • Original Kopparapu Recent Venus for Star Kepler-427 distance : 0.981 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-427 distance : 1.274 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-427 distance : 1.298 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-427 distance : 2.227 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-427 distance : 2.316 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-427)



    (Position in Stellar Map of star Kepler-427 and its Exoplanet Kepler-427 b)



    (Zoomed position in Stellar Map of star Kepler-427 and its Exoplanet Kepler-427 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-427*)
    *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