Imaginary Picture of Kepler-146 b

Display orbital revolution of Kepler-146 b around the hoststar Kepler-146
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Exoplanet Name : Kepler-146 b
Alternate Name : "2MASS J19362658+3842368 b, K00386.01, KIC 3656121 b, KOI-386 b, KOI-386.01, WISE J193626.56+384236.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.3310 (Rjup) 3.7102 (Rearth)
Mass (Mjup / Me): 0.0281 (Mjup) 8.9300 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2000 (AU) 0.2000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0853
Orbital Period(Observed/Estimated) 31.16 (Days Obs.) 31.15 (Days Est.)
Surface Gravity (G Earth) 0.6487
Star Radiation at Atmospheric Boundary: 42591.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 641.2 (K)
Blackbody T 0.3(K) 602.1 (K)
Blackbody T 0.7(K) 487.2 (K)
Tidally Locked Blackbody T 0.1(K) 762.5 (K)
Tidally Locked Blackbody T 0.3(K) 716.1 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Theoretical
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-146
Alternate Name : "2MASS J19362658+3842368, KIC 3656121, KOI-386, WISE J193626.56+384236.8"
Star Distance(LY) : 2336.8
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6001 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 3.5
Apparent Magnitude: 12.7
Right Ascension(RA) 294.1108
Declination (DEC) 38.7102
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-146+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-146%20b/
Kepler-146 b
Kepler-146 b

  • Kepler-146 b is an exoplanet orbiting the star Kepler-146, located about 2336.8 light-years (716.5 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-146 has apparent magnitude of 12.7, with absolute magnitude of 3.5.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6001 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-146 b orbits around the star Kepler-146 every 31.2 days with its orbital distance of 0.20 AU ( 29919574.1 km)
  • (Projected orbit of Kepler-146 b around its host star Kepler-146)


  • The Star Kepler-146 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.807 AU ( 120794098.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.116 AU ( 166969010.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.701 AU ( 254423822.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.503 AU ( 374395800.4 km)
  • Radiation at Planetary Boundary of Kepler-146 b : 42591.21 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-146)



  • Kopparapu Recent Venus for Star Kepler-146 distance : 0.826 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-146 distance : 1.046 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-146 distance : 1.010 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-146 distance : 1.107 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-146 distance : 1.836 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-146 distance : 1.937 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-146)



  • Original Kopparapu Recent Venus for Star Kepler-146 distance : 0.831 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-146 distance : 1.074 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-146 distance : 1.099 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-146 distance : 1.869 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-146 distance : 1.943 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-146)



    (Position in Stellar Map of star Kepler-146 and its Exoplanet Kepler-146 b)



    (Zoomed position in Stellar Map of star Kepler-146 and its Exoplanet Kepler-146 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-146*)
    *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