Imaginary Picture of Kepler-1309 b

Display orbital revolution of Kepler-1309 b around the hoststar Kepler-1309
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Exoplanet Name : Kepler-1309 b
Alternate Name : "2MASS J19545645+4045509 b, K02664.01, KIC 5562090 b, KOI-2664 b, KOI-2664.01, WISE J195456.44+404551.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.2110 (Rjup) 2.3651 (Rearth)
Mass (Mjup / Me): 0.0185 (Mjup) 5.8748 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1744 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0790
Orbital Period(Observed/Estimated) 28.84 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0503
Star Radiation at Atmospheric Boundary: 17499.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 513.3 (K)
Blackbody T 0.3(K) 482.1 (K)
Blackbody T 0.7(K) 390.0 (K)
Tidally Locked Blackbody T 0.1(K) 610.5 (K)
Tidally Locked Blackbody T 0.3(K) 573.3 (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-1309
Alternate Name : "2MASS J19545645+4045509, KIC 5562090, KOI-2664, WISE J195456.44+404551.1"
Star Distance(LY) : 2181.4
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 5151 (K)
Spectral type : K0
UV portion[%]: 5.3
Visible portion[%]: 40.6
IR portion[%]: 54.1
Metalicity : -0.0
Absolute Magnitude: 5.0
Apparent Magnitude: 14.1
Right Ascension(RA) 298.7352
Declination (DEC) 40.7642
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton1, Stephen T. Bryson2, Jeffrey L. Coughlin2,3, Jason F. Rowe4, Ganesh Ravichandran5, Erik A. Petigura6,7, Michael R. Haas2, and Natalie M. Batalha33"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 450 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1309+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1309%20b/
Kepler-1309 b
Kepler-1309 b

  • Kepler-1309 b is an exoplanet orbiting the star Kepler-1309, located about 2181.4 light-years (668.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1309 has apparent magnitude of 14.1, with absolute magnitude of 5.0.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5151 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-1309 b orbits around the star Kepler-1309 every 28.8 days with its orbital distance of 0.17 AU ( 26083619.0 km)
  • (Projected orbit of Kepler-1309 b around its host star Kepler-1309)


  • The Star Kepler-1309 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.451 AU ( 67501102.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.624 AU ( 93304164.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.950 AU ( 142174898.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.399 AU ( 209216591.2 km)
  • Radiation at Planetary Boundary of Kepler-1309 b : 17499.49 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1309)



  • Kopparapu Recent Venus for Star Kepler-1309 distance : 0.484 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1309 distance : 0.613 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1309 distance : 0.592 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1309 distance : 0.650 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1309 distance : 1.105 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1309 distance : 1.166 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1309)



  • Original Kopparapu Recent Venus for Star Kepler-1309 distance : 0.480 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1309 distance : 0.632 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1309 distance : 0.635 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1309 distance : 1.124 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1309 distance : 1.169 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1309)



    (Position in Stellar Map of star Kepler-1309 and its Exoplanet Kepler-1309 b)



    (Zoomed position in Stellar Map of star Kepler-1309 and its Exoplanet Kepler-1309 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1309*)
    *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