Imaginary Picture of Kepler-302 b

Display orbital revolution of Kepler-302 b around the hoststar Kepler-302
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Exoplanet Name : Kepler-302 b
Alternate Name : "2MASS J19371607+4337456 b, K01486.02, KIC 7898352 b, KOI-1486 b, KOI-1486.02, WISE J193716.06+433745.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.3620 (Rjup) 4.0577 (Rearth)
Mass (Mjup / Me): 0.0305 (Mjup) 9.7053 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1930 (AU) 0.1930 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0826
Orbital Period(Observed/Estimated) 30.18 (Days Obs.) 27.88 (Days Est.)
Surface Gravity (G Earth) 0.5895
Star Radiation at Atmospheric Boundary: 40621.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 633.6 (K)
Blackbody T 0.3(K) 595.0 (K)
Blackbody T 0.7(K) 481.4 (K)
Tidally Locked Blackbody T 0.1(K) 753.5 (K)
Tidally Locked Blackbody T 0.3(K) 707.6 (K)
Size Class: 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-302
Alternate Name : "2MASS J19371607+4337456, KIC 7898352, KOI-1486, WISE J193716.06+433745.3"
Star Distance(LY) : 4582.2
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5703 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.7
Metalicity : -0.2
Absolute Magnitude: 3.5
Apparent Magnitude: 14.3
Right Ascension(RA) 294.3170
Declination (DEC) 43.6293
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-302+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-302%20b/
Kepler-302 b
Kepler-302 b

  • Kepler-302 b is an exoplanet orbiting the star Kepler-302, located about 4582.2 light-years (1404.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-302 has apparent magnitude of 14.3, with absolute magnitude of 3.5.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5703 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-302 b orbits around the star Kepler-302 every 30.2 days with its orbital distance of 0.19 AU ( 28872389.0 km)
  • (Projected orbit of Kepler-302 b around its host star Kepler-302)


  • The Star Kepler-302 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.761 AU ( 113838354.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.052 AU ( 157354356.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.603 AU ( 239773216.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.359 AU ( 352836791.3 km)
  • Radiation at Planetary Boundary of Kepler-302 b : 40621.05 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-302)



  • Kopparapu Recent Venus for Star Kepler-302 distance : 0.792 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-302 distance : 1.003 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-302 distance : 0.969 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-302 distance : 1.062 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-302 distance : 1.775 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-302 distance : 1.872 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-302)



  • Original Kopparapu Recent Venus for Star Kepler-302 distance : 0.792 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-302 distance : 1.031 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-302 distance : 1.048 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-302 distance : 1.806 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-302 distance : 1.878 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-302)



    (Position in Stellar Map of star Kepler-302 and its Exoplanet Kepler-302 b)



    (Zoomed position in Stellar Map of star Kepler-302 and its Exoplanet Kepler-302 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-302*)
    *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