Imaginary Picture of Kepler-305 e

Display orbital revolution of Kepler-305 e around the hoststar Kepler-305
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Exoplanet Name : Kepler-305 e
Alternate Name : "2MASS J19565383+4020354 e, K01563.03, KIC 5219234 e, KOI-1563 e, KOI-1563.03, WISE J195653.83+402035.4 e"
Status : Confirmed
Radius (Rjup / Re): 0.1600 (Rjup) 1.7934 (Rearth)
Mass (Mjup / Me): 0.0143 (Mjup) 4.5419 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0400 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0088
Orbital Period(Observed/Estimated) 3.21 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4121
Star Radiation at Atmospheric Boundary: 323868.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1064.7 (K)
Blackbody T 0.3(K) 999.9 (K)
Blackbody T 0.7(K) 809.0 (K)
Tidally Locked Blackbody T 0.1(K) 1266.2 (K)
Tidally Locked Blackbody T 0.3(K) 1189.1 (K)
Size Class: super-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-305
Alternate Name : "2MASS J19565383+4020354, KIC 5219234, KOI-1563, WISE J195653.83+402035.4"
Star Distance(LY) : 2901.6
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5100 (K)
Spectral type : K1
UV portion[%]: 3.9
Visible portion[%]: 38.4
IR portion[%]: 57.6
Metalicity : -0.1
Absolute Magnitude: 6.1
Apparent Magnitude: 15.8
Right Ascension(RA) 299.2243
Declination (DEC) 40.3432
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-305 e
Kepler-305 e

  • Kepler-305 e is an exoplanet orbiting the star Kepler-305, located about 2901.6 light-years (889.6 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-305 has apparent magnitude of 15.8, with absolute magnitude of 6.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5100 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-305 e orbits around the star Kepler-305 every 3.2 days with its orbital distance of 0.04 AU ( 5981512.0 km)
  • (Projected orbit of Kepler-305 e around its host star Kepler-305)


  • The Star Kepler-305 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.445 AU ( 66592536.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.615 AU ( 92048287.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.938 AU ( 140261220.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.380 AU ( 206400530.3 km)
  • Radiation at Planetary Boundary of Kepler-305 e : 323868.40 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-305)



  • Kopparapu Recent Venus for Star Kepler-305 distance : 0.479 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-305 distance : 0.607 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-305 distance : 0.586 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-305 distance : 0.643 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-305 distance : 1.095 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-305 distance : 1.155 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-305)



  • Original Kopparapu Recent Venus for Star Kepler-305 distance : 0.475 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-305 distance : 0.625 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-305 distance : 0.628 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-305 distance : 1.114 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-305 distance : 1.158 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-305)



    (Position in Stellar Map of star Kepler-305 and its Exoplanet Kepler-305 e)



    (Zoomed position in Stellar Map of star Kepler-305 and its Exoplanet Kepler-305 e (zoom level 3))

    (Synthetic Spectrum of star Kepler-305*)
    *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