Imaginary Picture of K2-37 b

Display orbital revolution of K2-37 b around the hoststar K2-37
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Exoplanet Name : K2-37 b
Alternate Name : "2MASS J16134824-2447132 b, EPIC 203826436 b, EPIC 203826436.03, WISE J161348.23-244713.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.1440 (Rjup) 1.6141 (Rearth)
Mass (Mjup / Me): 0.0130 (Mjup) 4.1180 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0511 (AU) 0.0511 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0122
Orbital Period(Observed/Estimated) 4.44 (Days Obs.) 4.45 (Days Est.)
Surface Gravity (G Earth) 1.5806
Star Radiation at Atmospheric Boundary: 291308.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1036.9 (K)
Blackbody T 0.3(K) 973.7 (K)
Blackbody T 0.7(K) 787.9 (K)
Tidally Locked Blackbody T 0.1(K) 1233.1 (K)
Tidally Locked Blackbody T 0.3(K) 1158.0 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : K2-37
Alternate Name : "2MASS J16134824-2447132, EPIC 203826436, WISE J161348.23-244713.3"
Star Distance(LY) : 580.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5413 (K)
Spectral type : G3 V
UV portion[%]: 6.5
Visible portion[%]: 42.5
IR portion[%]: 51.0
Metalicity : -0.0
Absolute Magnitude: 6.3
Apparent Magnitude: 12.5
Right Ascension(RA) 243.4510
Declination (DEC) -24.7871
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-37&submit=SIMBAD+search
Open Exoplanet Database Link
K2-37 b
K2-37 b

  • K2-37 b is an exoplanet orbiting the star K2-37, located about 580.5 light-years (178.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star K2-37 has apparent magnitude of 12.5, with absolute magnitude of 6.3.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5413 with its spectral types of G3 V
  • In this planetary system, the extrasolar planet K2-37 b orbits around the star K2-37 every 4.4 days with its orbital distance of 0.05 AU ( 7644451.2 km)
  • (Projected orbit of K2-37 b around its host star K2-37)


  • The Star K2-37 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.540 AU ( 80714784.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.746 AU ( 111568925.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.136 AU ( 170006352.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.672 AU ( 250171795.3 km)
  • Radiation at Planetary Boundary of K2-37 b : 291308.37 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-37)



  • Kopparapu Recent Venus for Star K2-37 distance : 0.571 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-37 distance : 0.723 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-37 distance : 0.699 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-37 distance : 0.766 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-37 distance : 1.291 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-37 distance : 1.362 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-37)



  • Original Kopparapu Recent Venus for Star K2-37 distance : 0.568 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-37 distance : 0.744 AU
  • Original Kopparapu Moist Greenhouse for Star K2-37 distance : 0.752 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-37 distance : 1.314 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-37 distance : 1.366 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-37)



    (Position in Stellar Map of star K2-37 and its Exoplanet K2-37 b)



    (Zoomed position in Stellar Map of star K2-37 and its Exoplanet K2-37 b (zoom level 3))

    (Synthetic Spectrum of star K2-37*)
    *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