Imaginary Picture of Kepler-156 b

Display orbital revolution of Kepler-156 b around the hoststar Kepler-156
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Exoplanet Name : Kepler-156 b
Alternate Name : "2MASS J19211116+3744581 b, K00440.02, KIC 2438264 b, KOI-440 b, KOI-440.02, WISE J192111.15+374458.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2050 (Rjup) 2.2978 (Rearth)
Mass (Mjup / Me): 0.0180 (Mjup) 5.7193 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0540 (AU) 0.0540 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0136
Orbital Period(Observed/Estimated) 4.97 (Days Obs.) 4.86 (Days Est.)
Surface Gravity (G Earth) 1.0832
Star Radiation at Atmospheric Boundary: 181659.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 921.4 (K)
Blackbody T 0.3(K) 865.3 (K)
Blackbody T 0.7(K) 700.1 (K)
Tidally Locked Blackbody T 0.1(K) 1095.8 (K)
Tidally Locked Blackbody T 0.3(K) 1029.0 (K)
Size Class: sub-Neptune-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-156
Alternate Name : "2MASS J19211116+3744581, KIC 2438264, KOI-440, WISE J192111.15+374458.0"
Star Distance(LY) : 1445.9
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5078 (K)
Spectral type : K1
UV portion[%]: 3.9
Visible portion[%]: 38.3
IR portion[%]: 57.8
Metalicity : -0.0
Absolute Magnitude: 4.5
Apparent Magnitude: 12.7
Right Ascension(RA) 290.2965
Declination (DEC) 37.7495
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-156+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-156%20b/
Kepler-156 b
Kepler-156 b

  • Kepler-156 b is an exoplanet orbiting the star Kepler-156, located about 1445.9 light-years (443.3 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-156 has apparent magnitude of 12.7, with absolute magnitude of 4.5.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5078 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-156 b orbits around the star Kepler-156 every 5.0 days with its orbital distance of 0.05 AU ( 8078285.0 km)
  • (Projected orbit of Kepler-156 b around its host star Kepler-156)


  • The Star Kepler-156 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.450 AU ( 67356350.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.622 AU ( 93104078.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.948 AU ( 141870011.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.396 AU ( 208767937.3 km)
  • Radiation at Planetary Boundary of Kepler-156 b : 181659.52 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-156)



  • Kopparapu Recent Venus for Star Kepler-156 distance : 0.485 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-156 distance : 0.614 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-156 distance : 0.593 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-156 distance : 0.651 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-156 distance : 1.110 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-156 distance : 1.171 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-156)



  • Original Kopparapu Recent Venus for Star Kepler-156 distance : 0.480 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-156 distance : 0.633 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-156 distance : 0.636 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-156 distance : 1.129 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-156 distance : 1.174 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-156)



    (Position in Stellar Map of star Kepler-156 and its Exoplanet Kepler-156 b)



    (Zoomed position in Stellar Map of star Kepler-156 and its Exoplanet Kepler-156 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-156*)
    *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