Imaginary Picture of Kepler-244 b

Display orbital revolution of Kepler-244 b around the hoststar Kepler-244
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Exoplanet Name : Kepler-244 b
Alternate Name : "2MASS J19085824+4218049 b, K00864.01, KIC 6849310 b, KOI-864 b, KOI-864.01, WISE J190858.22+421804.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2460 (Rjup) 2.7574 (Rearth)
Mass (Mjup / Me): 0.0213 (Mjup) 6.7761 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0500 (AU) 0.0500 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0118
Orbital Period(Observed/Estimated) 4.31 (Days Obs.) 3.41 (Days Est.)
Surface Gravity (G Earth) 0.8912
Star Radiation at Atmospheric Boundary: 346307.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1082.7 (K)
Blackbody T 0.3(K) 1016.8 (K)
Blackbody T 0.7(K) 822.7 (K)
Tidally Locked Blackbody T 0.1(K) 1287.6 (K)
Tidally Locked Blackbody T 0.3(K) 1209.1 (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-244
Alternate Name : "2MASS J19085824+4218049, KIC 6849310, KOI-864, WISE J190858.22+421804.7"
Star Distance(LY) : 3385.8
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5498 (K)
Spectral type : G6
UV portion[%]: 7.1
Visible portion[%]: 43.6
IR portion[%]: 49.3
Metalicity : -0.2
Absolute Magnitude: 4.2
Apparent Magnitude: 14.3
Right Ascension(RA) 287.2427
Declination (DEC) 42.3014
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-244+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-244%20b/
Kepler-244 b
Kepler-244 b

  • Kepler-244 b is an exoplanet orbiting the star Kepler-244, located about 3385.8 light-years (1038.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-244 has apparent magnitude of 14.3, with absolute magnitude of 4.2.
  • It is 1.4 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5498 with its spectral types of G6
  • In this planetary system, the extrasolar planet Kepler-244 b orbits around the star Kepler-244 every 4.3 days with its orbital distance of 0.05 AU ( 7479893.5 km)
  • (Projected orbit of Kepler-244 b around its host star Kepler-244)


  • The Star Kepler-244 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.576 AU ( 86110568.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.796 AU ( 119027309.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.212 AU ( 181371279.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.784 AU ( 266895782.7 km)
  • Radiation at Planetary Boundary of Kepler-244 b : 346307.18 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-244)



  • Kopparapu Recent Venus for Star Kepler-244 distance : 0.607 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-244 distance : 0.768 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-244 distance : 0.742 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-244 distance : 0.813 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-244 distance : 1.367 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-244 distance : 1.442 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-244)



  • Original Kopparapu Recent Venus for Star Kepler-244 distance : 0.604 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-244 distance : 0.790 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-244 distance : 0.799 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-244 distance : 1.391 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-244 distance : 1.447 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-244)



    (Position in Stellar Map of star Kepler-244 and its Exoplanet Kepler-244 b)



    (Zoomed position in Stellar Map of star Kepler-244 and its Exoplanet Kepler-244 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-244*)
    *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