Imaginary Picture of Kepler-855 b
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Exoplanet Name : Kepler-855 b
Alternate Name :
Radius (Rjup / Re): 0.7450 (Rjup) 8.3507 (Rearth)
Mass (Mjup / Me): 0.4053 (Mjup) 128.8665 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0783 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0216
Orbital Period(Observed/Estimated) 7.89 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 524503.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1201.1 (K)
Blackbody T 0.3(K) 1128.0 (K)
Blackbody T 0.7(K) 912.6 (K)
Tidally Locked Blackbody T 0.1(K) 1428.4 (K)
Tidally Locked Blackbody T 0.3(K) 1341.4 (K)
Size Class: Jupiter-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-855
Alternate Name :
Star Distance(LY) : 4918.4
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5849 (K)
Spectral type : G2
Metalicity : 0.1
Absolute Magnitude: 2.8
Apparent Magnitude: 13.7
Right Ascension(RA) 295.0950
Declination (DEC) 43.5376
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 717 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-855%20b/
Kepler-855 b
Kepler-855 b

  • Kepler-855 b is an exoplanet orbiting the star Kepler-855, located about 4918.4 light-years (1508.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-855 has apparent magnitude of 13.7, with absolute magnitude of 2.8.
  • It is 1.0 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5849 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-855 b orbits around the star Kepler-855 every 7.9 days with its orbital distance of 0.08 AU ( 11714902.8 km)
  • (Projected orbit of Kepler-855 b around its host star Kepler-855)


  • The Star Kepler-855 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.109 AU ( 165975182.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.534 AU ( 229421077.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.337 AU ( 349586950.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.439 AU ( 514432512.4 km)
  • Radiation at Planetary Boundary of Kepler-855 b : 524503.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-855)



  • Kopparapu Recent Venus for Star Kepler-855 distance : 1.145 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-855 distance : 1.450 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-855 distance : 1.400 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-855 distance : 1.535 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-855 distance : 2.556 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-855 distance : 2.696 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-855)



  • Original Kopparapu Recent Venus for Star Kepler-855 distance : 1.148 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-855 distance : 1.490 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-855 distance : 1.519 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-855 distance : 2.601 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-855 distance : 2.705 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-855)



    (Position in Stellar Map of star Kepler-855 and its Exoplanet Kepler-855 b)



    (Zoomed position in Stellar Map of star Kepler-855 and its Exoplanet Kepler-855 b (zoom level 3))