Imaginary Picture of K2-237 b
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Exoplanet Name : K2-237 b
Alternate Name :
Radius (Rjup / Re): 1.6500 (Rjup) 18.4948 (Rearth)
Mass (Mjup / Me): 1.6000 (Mjup) 508.7008 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0370 (AU) 0.0370 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0060
Orbital Period(Observed/Estimated) 2.18 (Days Obs.) 2.30 (Days Est.)
Star Radiation at Atmospheric Boundary: 2807618.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1827.0 (K)
Blackbody T 0.3(K) 1715.7 (K)
Blackbody T 0.7(K) 1388.2 (K)
Tidally Locked Blackbody T 0.1(K) 2172.6 (K)
Tidally Locked Blackbody T 0.3(K) 2040.3 (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 : K2-237
Alternate Name : "2MASS 6550453-2842380, EPIC 229426032"
Star Distance(LY) : 1493.8
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6257 (K)
Spectral type : F6 V
Metalicity : 0.1
Absolute Magnitude: 3.3
Apparent Magnitude: 11.6
Right Ascension(RA) 253.7689
Declination (DEC) -28.7106
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
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SIMBAD LINK
Open Exoplanet Database Link
K2-237 b
K2-237 b

  • K2-237 b is an exoplanet orbiting the star K2-237, located about 1493.8 light-years (458.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star K2-237 has apparent magnitude of 11.6, with absolute magnitude of 3.3.
  • It is 1.3 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 6257 with its spectral types of F6 V
  • In this planetary system, the extrasolar planet K2-237 b orbits around the star K2-237 every 2.2 days with its orbital distance of 0.04 AU ( 5535121.2 km)
  • (Projected orbit of K2-237 b around its host star K2-237)


  • The Star K2-237 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.213 AU ( 181437252.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.676 AU ( 250793697.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.555 AU ( 382154094.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.759 AU ( 562356491.5 km)
  • Radiation at Planetary Boundary of K2-237 b : 2807618.25 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-237)



  • Kopparapu Recent Venus for Star K2-237 distance : 1.221 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-237 distance : 1.546 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-237 distance : 1.493 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-237 distance : 1.637 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-237 distance : 2.701 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-237 distance : 2.849 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-237)



  • Original Kopparapu Recent Venus for Star K2-237 distance : 1.235 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-237 distance : 1.586 AU
  • Original Kopparapu Moist Greenhouse for Star K2-237 distance : 1.634 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-237 distance : 2.750 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-237 distance : 2.859 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-237)



    (Position in Stellar Map of star K2-237 and its Exoplanet K2-237 b)



    (Zoomed position in Stellar Map of star K2-237 and its Exoplanet K2-237 b (zoom level 3))