Imaginary Picture of Kepler-328 b

Display orbital revolution of Kepler-328 b around the hoststar Kepler-328
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Exoplanet Name : Kepler-328 b
Alternate Name : "2MASS J19431423+4000306 b, K01873.02, KIC 4939346 b, KOI-1873 b, KOI-1873.02, WISE J194314.22+400030.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.2050 (Rjup) 2.2978 (Rearth)
Mass (Mjup / Me): 0.0900 (Mjup) 28.6144 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2158 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0956
Orbital Period(Observed/Estimated) 34.92 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 5.4193
Star Radiation at Atmospheric Boundary: 81065.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 753.1 (K)
Blackbody T 0.3(K) 707.2 (K)
Blackbody T 0.7(K) 572.2 (K)
Tidally Locked Blackbody T 0.1(K) 895.6 (K)
Tidally Locked Blackbody T 0.3(K) 841.1 (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-328
Alternate Name : "2MASS J19431423+4000306, KIC 4939346, KOI-1873, WISE J194314.22+400030.6"
Star Distance(LY) : 7679.7
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6210 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.2
Absolute Magnitude: 2.6
Apparent Magnitude: 14.5
Right Ascension(RA) 295.8093
Declination (DEC) 40.0085
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-328+&submit=SIMBAD+search
Open Exoplanet Database Link 0
Kepler-328 b
Kepler-328 b

  • Kepler-328 b is an exoplanet orbiting the star Kepler-328, located about 7679.7 light-years (2354.6 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-328 has apparent magnitude of 14.5, with absolute magnitude of 2.6.
  • It is 1.1 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 6210 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-328 b orbits around the star Kepler-328 every 34.9 days with its orbital distance of 0.22 AU ( 32288951.2 km)
  • (Projected orbit of Kepler-328 b around its host star Kepler-328)


  • The Star Kepler-328 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.202 AU ( 179846548.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.662 AU ( 248594929.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.532 AU ( 378803658.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.726 AU ( 557426177.1 km)
  • Radiation at Planetary Boundary of Kepler-328 b : 81065.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-328)



  • Kopparapu Recent Venus for Star Kepler-328 distance : 1.214 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-328 distance : 1.537 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-328 distance : 1.484 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-328 distance : 1.627 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-328 distance : 2.687 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-328 distance : 2.834 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-328)



  • Original Kopparapu Recent Venus for Star Kepler-328 distance : 1.226 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-328 distance : 1.577 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-328 distance : 1.623 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-328 distance : 2.736 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-328 distance : 2.845 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-328)



    (Position in Stellar Map of star Kepler-328 and its Exoplanet Kepler-328 b)



    (Zoomed position in Stellar Map of star Kepler-328 and its Exoplanet Kepler-328 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-328*)
    *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