Imaginary Picture of Kepler-523 b

Display orbital revolution of Kepler-523 b around the hoststar Kepler-523
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Exoplanet Name : Kepler-523 b
Alternate Name : "2MASS J18561467+4530246 b, K00323.01, KIC 9139084 b, KOI-323 b, KOI-323.01, WISE J185614.66+453024.5 b"
Status : Confirmed
Radius (Rjup / Re): 0.1750 (Rjup) 1.9616 (Rearth)
Mass (Mjup / Me): 0.0155 (Mjup) 4.9367 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0619 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0160
Orbital Period(Observed/Estimated) 5.84 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2830
Star Radiation at Atmospheric Boundary: 195131.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 938.0 (K)
Blackbody T 0.3(K) 880.9 (K)
Blackbody T 0.7(K) 712.8 (K)
Tidally Locked Blackbody T 0.1(K) 1115.5 (K)
Tidally Locked Blackbody T 0.3(K) 1047.6 (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-523
Alternate Name : "2MASS J18561467+4530246, KIC 9139084, KOI-323, WISE J185614.66+453024.5"
Star Distance(LY) : 826.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 5529 (K)
Spectral type : G7
UV portion[%]: 6.9
Visible portion[%]: 43.3
IR portion[%]: 49.7
Metalicity : -0.0
Absolute Magnitude: 4.3
Apparent Magnitude: 11.3
Right Ascension(RA) 284.0611
Declination (DEC) 45.5069
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 455 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-523%20b/
Kepler-523 b
Kepler-523 b

  • Kepler-523 b is an exoplanet orbiting the star Kepler-523, located about 826.0 light-years (253.2 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-523 has apparent magnitude of 11.3, with absolute magnitude of 4.3.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5529 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-523 b orbits around the star Kepler-523 every 5.8 days with its orbital distance of 0.06 AU ( 9263368.3 km)
  • (Projected orbit of Kepler-523 b around its host star Kepler-523)


  • The Star Kepler-523 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.535 AU ( 80050242.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.740 AU ( 110650355.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.127 AU ( 168606654.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.659 AU ( 248112077.9 km)
  • Radiation at Planetary Boundary of Kepler-523 b : 195131.26 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-523)



  • Kopparapu Recent Venus for Star Kepler-523 distance : 0.563 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-523 distance : 0.713 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-523 distance : 0.688 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-523 distance : 0.755 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-523 distance : 1.268 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-523 distance : 1.337 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-523)



  • Original Kopparapu Recent Venus for Star Kepler-523 distance : 0.561 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-523 distance : 0.733 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-523 distance : 0.742 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-523 distance : 1.290 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-523 distance : 1.341 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-523)



    (Position in Stellar Map of star Kepler-523 and its Exoplanet Kepler-523 b)



    (Zoomed position in Stellar Map of star Kepler-523 and its Exoplanet Kepler-523 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-523*)
    *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