Imaginary Picture of Kepler-1391 b

Display orbital revolution of Kepler-1391 b around the hoststar Kepler-1391
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Exoplanet Name : Kepler-1391 b
Alternate Name : "2MASS J19391944+4639345 b, K02943.01, KIC 9838468 b, KOI-2943 b, KOI-2943.01, WISE J193919.43+463934.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1500 (Rjup) 1.6813 (Rearth)
Mass (Mjup / Me): 0.0135 (Mjup) 4.2774 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2838 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1490
Orbital Period(Observed/Estimated) 54.41 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.5131
Star Radiation at Atmospheric Boundary: 43319.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 643.9 (K)
Blackbody T 0.3(K) 604.7 (K)
Blackbody T 0.7(K) 489.3 (K)
Tidally Locked Blackbody T 0.1(K) 765.7 (K)
Tidally Locked Blackbody T 0.3(K) 719.1 (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-1391
Alternate Name : "2MASS J19391944+4639345, KIC 9838468, KOI-2943, WISE J193919.43+463934.4"
Star Distance(LY) : 3384.8
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 5.5 (GY)
Temperature : 5781 (K)
Spectral type : G2
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 2.6
Apparent Magnitude: 12.7
Right Ascension(RA) 294.8310
Declination (DEC) 46.6596
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 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1391+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1391%20b/
Kepler-1391 b
Kepler-1391 b

  • Kepler-1391 b is an exoplanet orbiting the star Kepler-1391, located about 3384.8 light-years (1037.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1391 has apparent magnitude of 12.7, with absolute magnitude of 2.6.
  • It is 1.0 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5781 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-1391 b orbits around the star Kepler-1391 every 54.4 days with its orbital distance of 0.28 AU ( 42454729.2 km)
  • (Projected orbit of Kepler-1391 b around its host star Kepler-1391)


  • The Star Kepler-1391 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.156 AU ( 172860967.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.597 AU ( 238939030.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.434 AU ( 364090205.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.581 AU ( 535774686.8 km)
  • Radiation at Planetary Boundary of Kepler-1391 b : 43319.27 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1391)



  • Kopparapu Recent Venus for Star Kepler-1391 distance : 1.197 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1391 distance : 1.516 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1391 distance : 1.464 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1391 distance : 1.606 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1391 distance : 2.677 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1391 distance : 2.824 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1391)



  • Original Kopparapu Recent Venus for Star Kepler-1391 distance : 1.199 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1391 distance : 1.558 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1391 distance : 1.587 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1391 distance : 2.725 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1391 distance : 2.833 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1391)



    (Position in Stellar Map of star Kepler-1391 and its Exoplanet Kepler-1391 b)



    (Zoomed position in Stellar Map of star Kepler-1391 and its Exoplanet Kepler-1391 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1391*)
    *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