Imaginary Picture of Kepler-531 b

Display orbital revolution of Kepler-531 b around the hoststar Kepler-531
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Exoplanet Name : Kepler-531 b
Alternate Name : "2MASS J19060595+4841009 b, K00345.01, KIC 11074541 b, KOI-345 b, KOI-345.01, WISE J190605.93+484100.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.2480 (Rjup) 2.7798 (Rearth)
Mass (Mjup / Me): 0.0215 (Mjup) 6.8273 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1735 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0818
Orbital Period(Observed/Estimated) 29.88 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8835
Star Radiation at Atmospheric Boundary: 13019.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 476.8 (K)
Blackbody T 0.3(K) 447.7 (K)
Blackbody T 0.7(K) 362.3 (K)
Tidally Locked Blackbody T 0.1(K) 567.0 (K)
Tidally Locked Blackbody T 0.3(K) 532.4 (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-531
Alternate Name : "2MASS J19060595+4841009, KIC 11074541, KOI-345, WISE J190605.93+484100.8"
Star Distance(LY) : 824.2
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 7.8 (GY)
Temperature : 4935 (K)
Spectral type : K2
UV portion[%]: 2.8
Visible portion[%]: 36.1
IR portion[%]: 61.2
Metalicity : -0.0
Absolute Magnitude: 4.8
Apparent Magnitude: 11.8
Right Ascension(RA) 286.5248
Declination (DEC) 48.6836
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 463 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-531%20b/
Kepler-531 b
Kepler-531 b

  • Kepler-531 b is an exoplanet orbiting the star Kepler-531, located about 824.2 light-years (252.7 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-531 has apparent magnitude of 11.8, with absolute magnitude of 4.8.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4935 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-531 b orbits around the star Kepler-531 every 29.9 days with its orbital distance of 0.17 AU ( 25953598.9 km)
  • (Projected orbit of Kepler-531 b around its host star Kepler-531)


  • The Star Kepler-531 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.387 AU ( 57933329.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.535 AU ( 80079000.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.816 AU ( 122022675.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.200 AU ( 179561712.7 km)
  • Radiation at Planetary Boundary of Kepler-531 b : 13019.71 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-531)



  • Kopparapu Recent Venus for Star Kepler-531 distance : 0.420 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-531 distance : 0.532 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-531 distance : 0.514 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-531 distance : 0.564 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-531 distance : 0.967 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-531 distance : 1.020 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-531)



  • Original Kopparapu Recent Venus for Star Kepler-531 distance : 0.416 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-531 distance : 0.548 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-531 distance : 0.550 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-531 distance : 0.983 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-531 distance : 1.022 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-531)



    (Position in Stellar Map of star Kepler-531 and its Exoplanet Kepler-531 b)



    (Zoomed position in Stellar Map of star Kepler-531 and its Exoplanet Kepler-531 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-531*)
    *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