Imaginary Picture of Kepler-378 b

Display orbital revolution of Kepler-378 b around the hoststar Kepler-378
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Exoplanet Name : Kepler-378 b
Alternate Name : "2MASS J19394766+4626191 b, K02287.01, KIC 9718066 b, KOI-2287 b, KOI-2287.01, WISE J193947.72+462619.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.0670 (Rjup) 0.7510 (Rearth)
Mass (Mjup / Me): 0.0011 (Mjup) 0.3549 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1120 (AU) 0.1120 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0441
Orbital Period(Observed/Estimated) 16.09 (Days Obs.) 13.97 (Days Est.)
Surface Gravity (G Earth) 0.6293
Star Radiation at Atmospheric Boundary: 24236.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 556.9 (K)
Blackbody T 0.3(K) 523.0 (K)
Blackbody T 0.7(K) 423.1 (K)
Tidally Locked Blackbody T 0.1(K) 662.2 (K)
Tidally Locked Blackbody T 0.3(K) 621.9 (K)
Size Class: Earth-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-378
Alternate Name : "2MASS J19394766+4626191, KIC 9718066, KOI-2287, WISE J193947.72+462619.7"
Star Distance(LY) : 496.0
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4696 (K)
Spectral type : K4
UV portion[%]: 2.2
Visible portion[%]: 34.1
IR portion[%]: 63.7
Metalicity : 0.6
Absolute Magnitude: 4.9
Apparent Magnitude: 10.8
Right Ascension(RA) 294.9486
Declination (DEC) 46.4386
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-378+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-378%20b/
Kepler-378 b
Kepler-378 b

  • Kepler-378 b is an exoplanet orbiting the star Kepler-378, located about 496.0 light-years (152.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-378 has apparent magnitude of 10.8, with absolute magnitude of 4.9.
  • It is 1.0 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4696 with its spectral types of K4
  • In this planetary system, the extrasolar planet Kepler-378 b orbits around the star Kepler-378 every 16.1 days with its orbital distance of 0.11 AU ( 16754961.5 km)
  • (Projected orbit of Kepler-378 b around its host star Kepler-378)


  • The Star Kepler-378 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.341 AU ( 51028464.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.471 AU ( 70534673.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.718 AU ( 107479232.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.057 AU ( 158160399.6 km)
  • Radiation at Planetary Boundary of Kepler-378 b : 24236.93 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-378)



  • Kopparapu Recent Venus for Star Kepler-378 distance : 0.374 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-378 distance : 0.473 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-378 distance : 0.457 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-378 distance : 0.502 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-378 distance : 0.869 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-378 distance : 0.917 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-378)



  • Original Kopparapu Recent Venus for Star Kepler-378 distance : 0.369 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-378 distance : 0.488 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-378 distance : 0.489 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-378 distance : 0.884 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-378 distance : 0.919 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-378)



    (Position in Stellar Map of star Kepler-378 and its Exoplanet Kepler-378 b)



    (Zoomed position in Stellar Map of star Kepler-378 and its Exoplanet Kepler-378 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-378*)
    *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