Imaginary Picture of Kepler-224 d

Display orbital revolution of Kepler-224 d around the hoststar Kepler-224
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Exoplanet Name : Kepler-224 d
Alternate Name : "2MASS J19234422+4721273 d, K00733.02, KIC 10271806 d, KOI-733 d, KOI-733.02, WISE J192344.22+472127.2 d"
Status : Confirmed
Radius (Rjup / Re): 0.2050 (Rjup) 2.2978 (Rearth)
Mass (Mjup / Me): 0.0180 (Mjup) 5.7193 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0890 (AU) 0.0890 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0311
Orbital Period(Observed/Estimated) 11.35 (Days Obs.) 11.27 (Days Est.)
Surface Gravity (G Earth) 1.0832
Star Radiation at Atmospheric Boundary: 49887.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 667.0 (K)
Blackbody T 0.3(K) 626.4 (K)
Blackbody T 0.7(K) 506.8 (K)
Tidally Locked Blackbody T 0.1(K) 793.2 (K)
Tidally Locked Blackbody T 0.3(K) 744.9 (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-224
Alternate Name : "2MASS J19234422+4721273, KIC 10271806, KOI-733, WISE J192344.22+472127.2"
Star Distance(LY) : 2551.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5046 (K)
Spectral type : K2
UV portion[%]: 3.4
Visible portion[%]: 37.3
IR portion[%]: 59.4
Metalicity : -0.3
Absolute Magnitude: 4.7
Apparent Magnitude: 14.2
Right Ascension(RA) 290.9343
Declination (DEC) 47.3576
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-224+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-224%20d/
Kepler-224 d
Kepler-224 d

  • Kepler-224 d is an exoplanet orbiting the star Kepler-224, located about 2551.8 light-years (782.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-224 has apparent magnitude of 14.2, with absolute magnitude of 4.7.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 5046 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-224 d orbits around the star Kepler-224 every 11.3 days with its orbital distance of 0.09 AU ( 13314210.5 km)
  • (Projected orbit of Kepler-224 d around its host star Kepler-224)


  • The Star Kepler-224 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.389 AU ( 58175714.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.538 AU ( 80414039.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.819 AU ( 122533201.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.205 AU ( 180312973.2 km)
  • Radiation at Planetary Boundary of Kepler-224 d : 49887.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-224)



  • Kopparapu Recent Venus for Star Kepler-224 distance : 0.420 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-224 distance : 0.531 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-224 distance : 0.513 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-224 distance : 0.563 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-224 distance : 0.961 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-224 distance : 1.014 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-224)



  • Original Kopparapu Recent Venus for Star Kepler-224 distance : 0.416 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-224 distance : 0.548 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-224 distance : 0.550 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-224 distance : 0.978 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-224 distance : 1.017 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-224)



    (Position in Stellar Map of star Kepler-224 and its Exoplanet Kepler-224 d)



    (Zoomed position in Stellar Map of star Kepler-224 and its Exoplanet Kepler-224 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-224*)
    *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