Imaginary Picture of Kepler-426 b

Display orbital revolution of Kepler-426 b around the hoststar Kepler-426
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Exoplanet Name : Kepler-426 b
Alternate Name : "Kepler-426 b, 2MASS J19174431+4928242 b, K00195.01, KIC 11502867 b, KOI-195 b, KOI-195.01, WISE J191744.31+492824.3 b"
Status : Confirmed
Radius (Rjup / Re): 1.0900 (Rjup) 12.2178 (Rearth)
Mass (Mjup / Me): 0.3400 (Mjup) 108.0989 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0414 (AU) 0.0414 (AU Est.)
Eccentricity : 0.1800
Orbital Period(Yrs) 0.0088
Orbital Period(Observed/Estimated) 3.22 (Days Obs.) 3.23 (Days Est.)
Surface Gravity (G Earth) 0.7242
Star Radiation at Atmospheric Boundary: 550011.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1215.4 (K)
Blackbody T 0.3(K) 1141.4 (K)
Blackbody T 0.7(K) 923.5 (K)
Tidally Locked Blackbody T 0.1(K) 1445.4 (K)
Tidally Locked Blackbody T 0.3(K) 1357.4 (K)
Size Class: 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-426
Alternate Name : "2MASS J19174431+4928242, KIC 11502867, KOI-195, WISE J191744.31+492824.3"
Star Distance(LY) : 2750.9
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 6.0 (GY)
Temperature : 5535 (K)
Spectral type : G1 V
UV portion[%]: 7.7
Visible portion[%]: 44.5
IR portion[%]: 47.8
Metalicity : -0.2
Absolute Magnitude: 5.4
Apparent Magnitude: 15.0
Right Ascension(RA) 289.4346
Declination (DEC) 49.4734
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-195+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/KOI-195%20b/
Kepler-426 b
Kepler-426 b

  • Kepler-426 b is an exoplanet orbiting the star Kepler-426, located about 2750.9 light-years (843.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-426 has apparent magnitude of 15.0, with absolute magnitude of 5.4.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5535 with its spectral types of G1 V
  • In this planetary system, the extrasolar planet Kepler-426 b orbits around the star Kepler-426 every 3.2 days with its orbital distance of 0.04 AU ( 6193351.8 km)
  • (Projected orbit of Kepler-426 b around its host star Kepler-426)


  • The Star Kepler-426 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.601 AU ( 89854936.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.830 AU ( 124203004.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.265 AU ( 189257892.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.862 AU ( 278501279.6 km)
  • Radiation at Planetary Boundary of Kepler-426 b : 550011.52 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-426)



  • Kopparapu Recent Venus for Star Kepler-426 distance : 0.632 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-426 distance : 0.800 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-426 distance : 0.772 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-426 distance : 0.847 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-426 distance : 1.422 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-426 distance : 1.500 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-426)



  • Original Kopparapu Recent Venus for Star Kepler-426 distance : 0.629 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-426 distance : 0.822 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-426 distance : 0.833 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-426 distance : 1.447 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-426 distance : 1.505 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-426)



    (Position in Stellar Map of star Kepler-426 and its Exoplanet Kepler-426 b)



    (Zoomed position in Stellar Map of star Kepler-426 and its Exoplanet Kepler-426 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-426*)
    *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