Imaginary Picture of Kepler-237 c

Display orbital revolution of Kepler-237 c around the hoststar Kepler-237
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Exoplanet Name : Kepler-237 c
Alternate Name : "2MASS J18525313+4025185 c, K00825.01, KIC 5252423 c, KOI-825 c, KOI-825.01, WISE J185253.12+402518.4 c"
Radius (Rjup / Re): 0.1860 (Rjup) 2.0849 (Rearth)
Mass (Mjup / Me): 0.0164 (Mjup) 5.2247 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0710 (AU) 0.0710 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0222
Orbital Period(Observed/Estimated) 8.10 (Days Obs.) 8.26 (Days Est.)
Surface Gravity (G Earth) 1.2020
Star Radiation at Atmospheric Boundary: 83376.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 758.4 (K)
Blackbody T 0.3(K) 712.2 (K)
Blackbody T 0.7(K) 576.3 (K)
Tidally Locked Blackbody T 0.1(K) 901.9 (K)
Tidally Locked Blackbody T 0.3(K) 847.0 (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-237
Alternate Name : "2MASS J18525313+4025185, KIC 5252423, KOI-825, WISE J185253.12+402518.4"
Star Distance(LY) : 2145.2
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4897 (K)
Spectral type : K3
UV portion[%]: 2.6
Visible portion[%]: 35.8
IR portion[%]: 61.5
Metalicity : -0.1
Absolute Magnitude: 4.7
Apparent Magnitude: 13.7
Right Ascension(RA) 283.2214
Declination (DEC) 40.4218
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-237+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-237%20c/
Kepler-237 c
Kepler-237 c

  • Kepler-237 c is an exoplanet orbiting the star Kepler-237, located about 2145.2 light-years (657.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-237 has apparent magnitude of 13.7, with absolute magnitude of 4.7.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4897 with its spectral types of K3
  • In this planetary system, the extrasolar planet Kepler-237 c orbits around the star Kepler-237 every 8.1 days with its orbital distance of 0.07 AU ( 10621448.8 km)
  • (Projected orbit of Kepler-237 c around its host star Kepler-237)


  • The Star Kepler-237 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.401 AU ( 59997840.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.554 AU ( 82932695.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.845 AU ( 126371074.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.243 AU ( 185960572.1 km)
  • Radiation at Planetary Boundary of Kepler-237 c : 83376.40 W/m2

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



  • Kopparapu Recent Venus for Star Kepler-237 distance : 0.436 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-237 distance : 0.552 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-237 distance : 0.533 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-237 distance : 0.585 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-237 distance : 1.005 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-237 distance : 1.060 AU

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



  • Original Kopparapu Recent Venus for Star Kepler-237 distance : 0.431 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-237 distance : 0.569 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-237 distance : 0.570 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-237 distance : 1.021 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-237 distance : 1.062 AU

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



    (Position in Stellar Map of star Kepler-237 and its Exoplanet Kepler-237 c)



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

    (Synthetic Spectrum of star Kepler-237*)
    *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