Imaginary Picture of Kepler-509 b

Display orbital revolution of Kepler-509 b around the hoststar Kepler-509
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Exoplanet Name : Kepler-509 b
Alternate Name : "2MASS J19183945+4842223 b, K00276.01, KIC 11133306 b, KOI-276 b, KOI-276.01, WISE J191839.45+484222.2 b"
Status : Confirmed
Radius (Rjup / Re): 0.2220 (Rjup) 2.4884 (Rearth)
Mass (Mjup / Me): 0.0194 (Mjup) 6.1591 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2431 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1143
Orbital Period(Observed/Estimated) 41.75 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9947
Star Radiation at Atmospheric Boundary: 37434.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 620.8 (K)
Blackbody T 0.3(K) 583.0 (K)
Blackbody T 0.7(K) 471.7 (K)
Tidally Locked Blackbody T 0.1(K) 738.3 (K)
Tidally Locked Blackbody T 0.3(K) 693.3 (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-509
Alternate Name : "2MASS J19183945+4842223, KIC 11133306, KOI-276, WISE J191839.45+484222.2"
Star Distance(LY) : 1084.2
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 5952 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 3.2
Apparent Magnitude: 10.8
Right Ascension(RA) 289.6644
Declination (DEC) 48.7062
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 442 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-509%20b/
Kepler-509 b
Kepler-509 b

  • Kepler-509 b is an exoplanet orbiting the star Kepler-509, located about 1084.2 light-years (332.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-509 has apparent magnitude of 10.8, with absolute magnitude of 3.2.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5952 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-509 b orbits around the star Kepler-509 every 41.7 days with its orbital distance of 0.24 AU ( 36369675.9 km)
  • (Projected orbit of Kepler-509 b around its host star Kepler-509)


  • The Star Kepler-509 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.920 AU ( 137658534.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.272 AU ( 190280068.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.938 AU ( 289944715.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.852 AU ( 426666350.9 km)
  • Radiation at Planetary Boundary of Kepler-509 b : 37434.05 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-509)



  • Kopparapu Recent Venus for Star Kepler-509 distance : 0.944 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-509 distance : 1.195 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-509 distance : 1.154 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-509 distance : 1.265 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-509 distance : 2.101 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-509 distance : 2.216 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-509)



  • Original Kopparapu Recent Venus for Star Kepler-509 distance : 0.948 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-509 distance : 1.227 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-509 distance : 1.255 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-509 distance : 2.138 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-509 distance : 2.224 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-509)



    (Position in Stellar Map of star Kepler-509 and its Exoplanet Kepler-509 b)



    (Zoomed position in Stellar Map of star Kepler-509 and its Exoplanet Kepler-509 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-509*)
    *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