Imaginary Picture of Kepler-1393 b

Display orbital revolution of Kepler-1393 b around the hoststar Kepler-1393
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Exoplanet Name : Kepler-1393 b
Alternate Name : "2MASS J18575026+4008332 b, K02951.01, KIC 4991208 b, KOI-2951 b, KOI-2951.01, WISE J185750.26+400833.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.0710 (Rjup) 0.7958 (Rearth)
Mass (Mjup / Me): 0.0014 (Mjup) 0.4351 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0349 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0067
Orbital Period(Observed/Estimated) 2.44 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.6870
Star Radiation at Atmospheric Boundary: 733693.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1306.2 (K)
Blackbody T 0.3(K) 1226.7 (K)
Blackbody T 0.7(K) 992.5 (K)
Tidally Locked Blackbody T 0.1(K) 1553.4 (K)
Tidally Locked Blackbody T 0.3(K) 1458.8 (K)
Size Class: 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-1393
Alternate Name : "2MASS J18575026+4008332, KIC 4991208, KOI-2951, WISE J185750.26+400833.0"
Star Distance(LY) : 1248.2
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.5 (GY)
Temperature : 5561 (K)
Spectral type : G4
UV portion[%]: 7.6
Visible portion[%]: 44.4
IR portion[%]: 48.0
Metalicity : -0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 12.2
Right Ascension(RA) 284.4595
Declination (DEC) 40.1426
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-1393+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1393%20b/
Kepler-1393 b
Kepler-1393 b

  • Kepler-1393 b is an exoplanet orbiting the star Kepler-1393, located about 1248.2 light-years (382.7 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1393 has apparent magnitude of 12.2, with absolute magnitude of 4.3.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5561 with its spectral types of G4
  • In this planetary system, the extrasolar planet Kepler-1393 b orbits around the star Kepler-1393 every 2.4 days with its orbital distance of 0.03 AU ( 5221443.9 km)
  • (Projected orbit of Kepler-1393 b around its host star Kepler-1393)


  • The Star Kepler-1393 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.585 AU ( 87493974.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.808 AU ( 120939538.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.232 AU ( 184285092.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.813 AU ( 271183585.9 km)
  • Radiation at Planetary Boundary of Kepler-1393 b : 733693.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1393)



  • Kopparapu Recent Venus for Star Kepler-1393 distance : 0.614 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1393 distance : 0.778 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1393 distance : 0.751 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1393 distance : 0.824 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1393 distance : 1.382 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1393 distance : 1.457 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1393)



  • Original Kopparapu Recent Venus for Star Kepler-1393 distance : 0.612 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1393 distance : 0.800 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1393 distance : 0.810 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1393 distance : 1.406 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1393 distance : 1.462 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1393)



    (Position in Stellar Map of star Kepler-1393 and its Exoplanet Kepler-1393 b)



    (Zoomed position in Stellar Map of star Kepler-1393 and its Exoplanet Kepler-1393 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1393*)
    *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