Imaginary Picture of Kepler-1399 b

Display orbital revolution of Kepler-1399 b around the hoststar Kepler-1399
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Exoplanet Name : Kepler-1399 b
Alternate Name : "2MASS J19331480+4602301 b, K02980.01, KIC 9468551 b, KOI-2980 b, KOI-2980.01"
Status : Confirmed
Radius (Rjup / Re): 0.1120 (Rjup) 1.2554 (Rearth)
Mass (Mjup / Me): 0.0070 (Mjup) 2.2217 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0269 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0045
Orbital Period(Observed/Estimated) 1.64 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4097
Star Radiation at Atmospheric Boundary: 2449159.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1765.6 (K)
Blackbody T 0.3(K) 1658.1 (K)
Blackbody T 0.7(K) 1341.6 (K)
Tidally Locked Blackbody T 0.1(K) 2099.7 (K)
Tidally Locked Blackbody T 0.3(K) 1971.8 (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-1399
Alternate Name : "2MASS J19331480+4602301, KIC 9468551, KOI-2980"
Star Distance(LY) : 4530.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 6123 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.7
Metalicity : -0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 14.3
Right Ascension(RA) 293.3117
Declination (DEC) 46.0417
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-1399%20b/
Kepler-1399 b
Kepler-1399 b

  • Kepler-1399 b is an exoplanet orbiting the star Kepler-1399, located about 4530.6 light-years (1389.1 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1399 has apparent magnitude of 14.3, with absolute magnitude of 3.6.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6123 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1399 b orbits around the star Kepler-1399 every 1.6 days with its orbital distance of 0.03 AU ( 4028226.2 km)
  • (Projected orbit of Kepler-1399 b around its host star Kepler-1399)


  • The Star Kepler-1399 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.824 AU ( 123325440.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.140 AU ( 170467986.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.736 AU ( 259755487.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.555 AU ( 382241579.0 km)
  • Radiation at Planetary Boundary of Kepler-1399 b : 2449159.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1399)



  • Kopparapu Recent Venus for Star Kepler-1399 distance : 0.837 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1399 distance : 1.060 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1399 distance : 1.023 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1399 distance : 1.122 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1399 distance : 1.856 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1399 distance : 1.957 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1399)



  • Original Kopparapu Recent Venus for Star Kepler-1399 distance : 0.844 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1399 distance : 1.088 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1399 distance : 1.117 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1399 distance : 1.889 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1399 distance : 1.964 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1399)



    (Position in Stellar Map of star Kepler-1399 and its Exoplanet Kepler-1399 b)



    (Zoomed position in Stellar Map of star Kepler-1399 and its Exoplanet Kepler-1399 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1399*)
    *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