Imaginary Picture of Kepler-390 b

Display orbital revolution of Kepler-390 b around the hoststar Kepler-390
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Exoplanet Name : Kepler-390 b
Alternate Name : "2MASS J19263090+4112309 b, K02498.01, KIC 5959719 b, KOI-2498 b, KOI-2498.01, Kepler-390 A b, WISE J192630.91+411231.5
Status : Confirmed
Radius (Rjup / Re): 0.0730 (Rjup) 0.8183 (Rearth)
Mass (Mjup / Me): 0.0015 (Mjup) 0.4799 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0650 (AU) 0.0650 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0184
Orbital Period(Observed/Estimated) 6.74 (Days Obs.) 7.39 (Days Est.)
Surface Gravity (G Earth) 0.7167
Star Radiation at Atmospheric Boundary: 135287.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 856.0 (K)
Blackbody T 0.3(K) 803.8 (K)
Blackbody T 0.7(K) 650.4 (K)
Tidally Locked Blackbody T 0.1(K) 1017.9 (K)
Tidally Locked Blackbody T 0.3(K) 955.9 (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-390
Alternate Name : "2MASS J19263090+4112309, KIC 5959719, KOI-2498, Kepler-390 A, WISE J192630.91+411231.5"
Star Distance(LY) : 1419.2
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5128 (K)
Spectral type : K1
UV portion[%]: 4.7
Visible portion[%]: 39.6
IR portion[%]: 55.7
Metalicity : -0.5
Absolute Magnitude: 4.4
Apparent Magnitude: 12.6
Right Ascension(RA) 291.6288
Declination (DEC) 41.2086
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-390+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-390%20b/
Kepler-390 b
Kepler-390 b

  • Kepler-390 b is an exoplanet orbiting the star Kepler-390, located about 1419.2 light-years (435.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-390 has apparent magnitude of 12.6, with absolute magnitude of 4.4.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5128 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-390 b orbits around the star Kepler-390 every 6.7 days with its orbital distance of 0.07 AU ( 9723861.6 km)
  • (Projected orbit of Kepler-390 b around its host star Kepler-390)


  • The Star Kepler-390 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.468 AU ( 69967652.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.646 AU ( 96713580.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.985 AU ( 147370093.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.450 AU ( 216861549.0 km)
  • Radiation at Planetary Boundary of Kepler-390 b : 135287.13 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-390)



  • Kopparapu Recent Venus for Star Kepler-390 distance : 0.503 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-390 distance : 0.637 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-390 distance : 0.615 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-390 distance : 0.675 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-390 distance : 1.148 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-390 distance : 1.211 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-390)



  • Original Kopparapu Recent Venus for Star Kepler-390 distance : 0.498 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-390 distance : 0.656 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-390 distance : 0.659 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-390 distance : 1.167 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-390 distance : 1.214 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-390)



    (Position in Stellar Map of star Kepler-390 and its Exoplanet Kepler-390 b)



    (Zoomed position in Stellar Map of star Kepler-390 and its Exoplanet Kepler-390 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-390*)
    *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