Imaginary Picture of Kepler-423 b

Display orbital revolution of Kepler-423 b around the hoststar Kepler-423
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Exoplanet Name : Kepler-423 b
Alternate Name : "2MASS J19312537+4623282 b, K00183.01, KIC 9651668 b, KOI-183 b, KOI-183.01, WISE J193125.38+462328.2 b"
Status : Confirmed
Radius (Rjup / Re): 1.1920 (Rjup) 13.3611 (Rearth)
Mass (Mjup / Me): 0.5950 (Mjup) 189.1731 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0358 (AU) 0.0358 (AU Est.)
Eccentricity : 0.0190
Orbital Period(Yrs) 0.0073
Orbital Period(Observed/Estimated) 2.68 (Days Obs.) 2.69 (Days Est.)
Surface Gravity (G Earth) 1.0597
Star Radiation at Atmospheric Boundary: 893708.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1372.3 (K)
Blackbody T 0.3(K) 1288.7 (K)
Blackbody T 0.7(K) 1042.7 (K)
Tidally Locked Blackbody T 0.1(K) 1631.9 (K)
Tidally Locked Blackbody T 0.3(K) 1532.5 (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-423
Alternate Name : "2MASS J19312537+4623282, KIC 9651668, KOI-183, WISE J193125.38+462328.2"
Star Distance(LY) : 2474.2
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 11.0 (GY)
Temperature : 5560 (K)
Spectral type : G4 V
UV portion[%]: 7.1
Visible portion[%]: 43.6
IR portion[%]: 49.2
Metalicity : -0.1
Absolute Magnitude: 5.1
Apparent Magnitude: 14.5
Right Ascension(RA) 292.8557
Declination (DEC) 46.3912
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-423+&submit=SIMBAD+search
Open Exoplanet Database Link 0
Kepler-423 b
Kepler-423 b

  • Kepler-423 b is an exoplanet orbiting the star Kepler-423, located about 2474.2 light-years (758.6 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-423 has apparent magnitude of 14.5, with absolute magnitude of 5.1.
  • It is 0.8 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5560 with its spectral types of G4 V
  • In this planetary system, the extrasolar planet Kepler-423 b orbits around the star Kepler-423 every 2.7 days with its orbital distance of 0.04 AU ( 5363083.7 km)
  • (Projected orbit of Kepler-423 b around its host star Kepler-423)


  • The Star Kepler-423 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.663 AU ( 99184290.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.916 AU ( 137098609.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.396 AU ( 208907940.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.055 AU ( 307417186.2 km)
  • Radiation at Planetary Boundary of Kepler-423 b : 893708.82 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-423)



  • Kopparapu Recent Venus for Star Kepler-423 distance : 0.696 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-423 distance : 0.881 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-423 distance : 0.851 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-423 distance : 0.934 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-423 distance : 1.566 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-423 distance : 1.652 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-423)



  • Original Kopparapu Recent Venus for Star Kepler-423 distance : 0.694 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-423 distance : 0.906 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-423 distance : 0.918 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-423 distance : 1.594 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-423 distance : 1.657 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-423)



    (Position in Stellar Map of star Kepler-423 and its Exoplanet Kepler-423 b)



    (Zoomed position in Stellar Map of star Kepler-423 and its Exoplanet Kepler-423 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-423*)
    *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