Imaginary Picture of Kepler-1128 b

Display orbital revolution of Kepler-1128 b around the hoststar Kepler-1128
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Exoplanet Name : Kepler-1128 b
Alternate Name : "2MASS J19321520+3924124 b, K02166.01, KIC 4370527 b, KOI-2166 b, KOI-2166.01"
Status : Confirmed
Radius (Rjup / Re): 0.3260 (Rjup) 3.6541 (Rearth)
Mass (Mjup / Me): 0.0277 (Mjup) 8.8045 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2991 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1687
Orbital Period(Observed/Estimated) 61.62 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.6594
Star Radiation at Atmospheric Boundary: 8990.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 434.6 (K)
Blackbody T 0.3(K) 408.1 (K)
Blackbody T 0.7(K) 330.2 (K)
Tidally Locked Blackbody T 0.1(K) 516.8 (K)
Tidally Locked Blackbody T 0.3(K) 485.4 (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-1128
Alternate Name : "2MASS J19321520+3924124, KIC 4370527, KOI-2166"
Star Distance(LY) : 3537.6
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.6 (GY)
Temperature : 5476 (K)
Spectral type : G7
UV portion[%]: 7.1
Visible portion[%]: 43.5
IR portion[%]: 49.4
Metalicity : 0.0
Absolute Magnitude: 4.2
Apparent Magnitude: 14.4
Right Ascension(RA) 293.0633
Declination (DEC) 39.4034
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. Batalha2"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 428 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1128%20b/
Kepler-1128 b
Kepler-1128 b

  • Kepler-1128 b is an exoplanet orbiting the star Kepler-1128, located about 3537.6 light-years (1084.6 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1128 has apparent magnitude of 14.4, with absolute magnitude of 4.2.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5476 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-1128 b orbits around the star Kepler-1128 every 61.6 days with its orbital distance of 0.30 AU ( 44741659.1 km)
  • (Projected orbit of Kepler-1128 b around its host star Kepler-1128)


  • The Star Kepler-1128 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.555 AU ( 82993267.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.767 AU ( 114718384.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.169 AU ( 174805430.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.720 AU ( 257233848.3 km)
  • Radiation at Planetary Boundary of Kepler-1128 b : 8990.85 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1128)



  • Kopparapu Recent Venus for Star Kepler-1128 distance : 0.585 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1128 distance : 0.741 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1128 distance : 0.716 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1128 distance : 0.785 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1128 distance : 1.320 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1128 distance : 1.393 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1128)



  • Original Kopparapu Recent Venus for Star Kepler-1128 distance : 0.583 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1128 distance : 0.762 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1128 distance : 0.771 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1128 distance : 1.343 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1128 distance : 1.397 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1128)



    (Position in Stellar Map of star Kepler-1128 and its Exoplanet Kepler-1128 b)



    (Zoomed position in Stellar Map of star Kepler-1128 and its Exoplanet Kepler-1128 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1128*)
    *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