Imaginary Picture of Kepler-1503 b

Display orbital revolution of Kepler-1503 b around the hoststar Kepler-1503
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Exoplanet Name : Kepler-1503 b
Alternate Name : "2MASS J19345452+4248243 b, K03443.01, KIC 7288306 b, KOI-3443 b, KOI-3443.01, WISE J193454.52+424824.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.2030 (Rjup) 2.2754 (Rearth)
Mass (Mjup / Me): 0.0178 (Mjup) 5.6674 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.3765 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2633
Orbital Period(Observed/Estimated) 96.17 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0946
Star Radiation at Atmospheric Boundary: 7725.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 418.4 (K)
Blackbody T 0.3(K) 393.0 (K)
Blackbody T 0.7(K) 317.9 (K)
Tidally Locked Blackbody T 0.1(K) 497.6 (K)
Tidally Locked Blackbody T 0.3(K) 467.3 (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-1503
Alternate Name : "2MASS J19345452+4248243, KIC 7288306, KOI-3443, WISE J193454.52+424824.1"
Star Distance(LY) : 4007.8
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 5.1 (GY)
Temperature : 5335 (K)
Spectral type : K1
UV portion[%]: 3.7
Visible portion[%]: 38.0
IR portion[%]: 58.3
Metalicity : -0.2
Absolute Magnitude: 3.9
Apparent Magnitude: 14.4
Right Ascension(RA) 293.7272
Declination (DEC) 42.8068
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
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1503%20b/
Kepler-1503 b
Kepler-1503 b

  • Kepler-1503 b is an exoplanet orbiting the star Kepler-1503, located about 4007.8 light-years (1228.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1503 has apparent magnitude of 14.4, with absolute magnitude of 3.9.
  • It is 0.8 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5335 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-1503 b orbits around the star Kepler-1503 every 96.2 days with its orbital distance of 0.38 AU ( 56327635.8 km)
  • (Projected orbit of Kepler-1503 b around its host star Kepler-1503)


  • The Star Kepler-1503 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.647 AU ( 96853709.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.895 AU ( 133877137.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.364 AU ( 203999130.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.007 AU ( 300193657.3 km)
  • Radiation at Planetary Boundary of Kepler-1503 b : 7725.54 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1503)



  • Kopparapu Recent Venus for Star Kepler-1503 distance : 0.688 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1503 distance : 0.872 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1503 distance : 0.842 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1503 distance : 0.924 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1503 distance : 1.560 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1503 distance : 1.646 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1503)



  • Original Kopparapu Recent Venus for Star Kepler-1503 distance : 0.684 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1503 distance : 0.897 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1503 distance : 0.905 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1503 distance : 1.587 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1503 distance : 1.650 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1503)



    (Position in Stellar Map of star Kepler-1503 and its Exoplanet Kepler-1503 b)



    (Zoomed position in Stellar Map of star Kepler-1503 and its Exoplanet Kepler-1503 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1503*)
    *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