Imaginary Picture of Kepler-928 b

Display orbital revolution of Kepler-928 b around the hoststar Kepler-928
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Exoplanet Name : Kepler-928 b
Alternate Name : "2MASS J19194097+4132341 b, K01687.01, KIC 6198999 b, KOI-1687 b, KOI-1687.01, WISE J191940.95+413233.9 b"
Status : Confirmed
Radius (Rjup / Re): 0.1420 (Rjup) 1.5917 (Rearth)
Mass (Mjup / Me): 0.0128 (Mjup) 4.0648 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0439 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0108
Orbital Period(Observed/Estimated) 3.93 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.6045
Star Radiation at Atmospheric Boundary: 155025.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 885.6 (K)
Blackbody T 0.3(K) 831.7 (K)
Blackbody T 0.7(K) 672.9 (K)
Tidally Locked Blackbody T 0.1(K) 1053.2 (K)
Tidally Locked Blackbody T 0.3(K) 989.0 (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-928
Alternate Name : "2MASS J19194097+4132341, KIC 6198999, KOI-1687, WISE J191940.95+413233.9"
Star Distance(LY) : 1659.3
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 4834 (K)
Spectral type : K4
UV portion[%]: 2.2
Visible portion[%]: 34.2
IR portion[%]: 63.6
Metalicity : -0.1
Absolute Magnitude: 5.2
Apparent Magnitude: 13.7
Right Ascension(RA) 289.9207
Declination (DEC) 41.5428
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 754 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-928%20b/
Kepler-928 b
Kepler-928 b

  • Kepler-928 b is an exoplanet orbiting the star Kepler-928, located about 1659.3 light-years (508.7 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-928 has apparent magnitude of 13.7, with absolute magnitude of 5.2.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4834 with its spectral types of K4
  • In this planetary system, the extrasolar planet Kepler-928 b orbits around the star Kepler-928 every 3.9 days with its orbital distance of 0.04 AU ( 6567738.5 km)
  • (Projected orbit of Kepler-928 b around its host star Kepler-928)


  • The Star Kepler-928 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.338 AU ( 50588041.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.467 AU ( 69925893.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.712 AU ( 106551587.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.048 AU ( 156795328.7 km)
  • Radiation at Planetary Boundary of Kepler-928 b : 155025.61 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-928)



  • Kopparapu Recent Venus for Star Kepler-928 distance : 0.369 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-928 distance : 0.467 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-928 distance : 0.451 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-928 distance : 0.495 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-928 distance : 0.852 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-928 distance : 0.898 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-928)



  • Original Kopparapu Recent Venus for Star Kepler-928 distance : 0.364 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-928 distance : 0.481 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-928 distance : 0.482 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-928 distance : 0.866 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-928 distance : 0.900 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-928)



    (Position in Stellar Map of star Kepler-928 and its Exoplanet Kepler-928 b)



    (Zoomed position in Stellar Map of star Kepler-928 and its Exoplanet Kepler-928 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-928*)
    *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