Imaginary Picture of Kepler-477 b

Display orbital revolution of Kepler-477 b around the hoststar Kepler-477
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Exoplanet Name : Kepler-477 b
Alternate Name : "2MASS J19121622+4221193 b, K00163.01, KIC 6851425 b, KOI-163 b, KOI-163.01, Kepler-477 B b, WISE J191216.19+422119.2 b"
Status : Confirmed
Radius (Rjup / Re): 0.1850 (Rjup) 2.0737 (Rearth)
Mass (Mjup / Me): 0.0164 (Mjup) 5.1985 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0931 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0304
Orbital Period(Observed/Estimated) 11.12 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2089
Star Radiation at Atmospheric Boundary: 55225.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 684.2 (K)
Blackbody T 0.3(K) 642.5 (K)
Blackbody T 0.7(K) 519.9 (K)
Tidally Locked Blackbody T 0.1(K) 813.6 (K)
Tidally Locked Blackbody T 0.3(K) 764.1 (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-477
Alternate Name : "2MASS J19121622+4221193, KIC 6851425, KOI-163, Kepler-477 B, WISE J191216.19+422119.2"
Star Distance(LY) : 1027.4
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 2.1 (GY)
Temperature : 5078 (K)
Spectral type : K0
UV portion[%]: 5.3
Visible portion[%]: 40.7
IR portion[%]: 54.0
Metalicity : -0.0
Absolute Magnitude: 4.8
Apparent Magnitude: 12.3
Right Ascension(RA) 288.0676
Declination (DEC) 42.3554
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 435 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-477%20b/
Kepler-477 b
Kepler-477 b

  • Kepler-477 b is an exoplanet orbiting the star Kepler-477, located about 1027.4 light-years (315.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-477 has apparent magnitude of 12.3, with absolute magnitude of 4.8.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5078 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-477 b orbits around the star Kepler-477 every 11.1 days with its orbital distance of 0.09 AU ( 13924270.1 km)
  • (Projected orbit of Kepler-477 b around its host star Kepler-477)


  • The Star Kepler-477 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.428 AU ( 64013603.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.591 AU ( 88483528.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.901 AU ( 134829316.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.326 AU ( 198407245.6 km)
  • Radiation at Planetary Boundary of Kepler-477 b : 55225.43 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-477)



  • Kopparapu Recent Venus for Star Kepler-477 distance : 0.461 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-477 distance : 0.584 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-477 distance : 0.564 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-477 distance : 0.619 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-477 distance : 1.055 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-477 distance : 1.113 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-477)



  • Original Kopparapu Recent Venus for Star Kepler-477 distance : 0.457 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-477 distance : 0.602 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-477 distance : 0.604 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-477 distance : 1.073 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-477 distance : 1.116 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-477)



    (Position in Stellar Map of star Kepler-477 and its Exoplanet Kepler-477 b)



    (Zoomed position in Stellar Map of star Kepler-477 and its Exoplanet Kepler-477 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-477*)
    *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