Imaginary Picture of KELT-19 A b
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Exoplanet Name : KELT-19 A b
Alternate Name :
Radius (Rjup / Re): 1.9100 (Rjup) 21.4092 (Rearth)
Mass (Mjup / Me): 4.0700 (Mjup) 1294.0077 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0637 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0126
Orbital Period(Observed/Estimated) 4.61 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 3204151.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1888.3 (K)
Blackbody T 0.3(K) 1773.3 (K)
Blackbody T 0.7(K) 1434.8 (K)
Tidally Locked Blackbody T 0.1(K) 2245.6 (K)
Tidally Locked Blackbody T 0.3(K) 2108.8 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : KELT-19 A
Alternate Name :
Star Distance(LY) : 831.7
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.6 (Msun Measured) 1.6 (Msun Estimated)
Star Age : 1.1 (GY)
Temperature : 7500 (K)
Spectral type : A8V
Metalicity : -0.1
Absolute Magnitude: 15.0
Apparent Magnitude: 22.0
Right Ascension(RA) 111.5125
Declination (DEC) 7.6158
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
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SIMBAD LINK
Open Exoplanet Database Link
KELT-19 A b
KELT-19 A b

  • KELT-19 A b is an exoplanet orbiting the star KELT-19 A, located about 831.7 light-years (255.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star KELT-19 A has apparent magnitude of 22.0, with absolute magnitude of 15.0.
  • It is 1.6 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 7500 with its spectral types of A8V
  • In this planetary system, the extrasolar planet KELT-19 A b orbits around the star KELT-19 A every 4.6 days with its orbital distance of 0.06 AU ( 9526752.5 km)
  • (Projected orbit of KELT-19 A b around its host star KELT-19 A)


  • The Star KELT-19 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.230 AU ( 333604368.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.082 AU ( 461128418.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 4.697 AU ( 702657662.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 6.912 AU ( 1033991531.4 km)
  • Radiation at Planetary Boundary of KELT-19 A b : 3204151.94 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KELT-19 A)



  • Kopparapu Recent Venus for Star KELT-19 A distance : 2.114 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KELT-19 A distance : 2.677 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KELT-19 A distance : 2.585 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KELT-19 A distance : 2.830 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KELT-19 A distance : 4.617 AU
  • Kopparapu Outer Boundary for Early Mars for Star KELT-19 A distance : 4.869 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KELT-19 A)



  • Original Kopparapu Recent Venus for Star KELT-19 A distance : 2.190 AU
  • Original Kopparapu Runaway Greenhouse for Star KELT-19 A distance : 2.736 AU
  • Original Kopparapu Moist Greenhouse for Star KELT-19 A distance : 2.898 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KELT-19 A distance : 4.701 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KELT-19 A distance : 4.889 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KELT-19 A)



    (Position in Stellar Map of star KELT-19 A and its Exoplanet KELT-19 A b)



    (Zoomed position in Stellar Map of star KELT-19 A and its Exoplanet KELT-19 A b (zoom level 3))