Imaginary Picture of EPIC 201238110 b

Display orbital revolution of EPIC 201238110 b around the hoststar EPIC 201238110
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Exoplanet Name : EPIC 201238110 b
Alternate Name : "2MASS J11584943-0323218 b, EPIC 201238110.02, K2-296 b, WISE J115849.41-032321.9 b"
Status : Confirmed
Radius (Rjup / Re): 0.1670 (Rjup) 1.8719 (Rearth)
Mass (Mjup / Me): 0.0149 (Mjup) 4.7265 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1346 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0771
Orbital Period(Observed/Estimated) 28.17 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.3489
Star Radiation at Atmospheric Boundary: 1324.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 269.2 (K)
Blackbody T 0.3(K) 252.8 (K)
Blackbody T 0.7(K) 204.6 (K)
Tidally Locked Blackbody T 0.1(K) 320.2 (K)
Tidally Locked Blackbody T 0.3(K) 300.7 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Habitable
Star Name : EPIC 201238110
Alternate Name : "2MASS J11584943-0323218, K2-296, WISE J115849.41-032321.9"
Star Distance(LY) : 521.8
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
UV portion[%]: 0.2
Visible portion[%]: 11.2
IR portion[%]: 88.6
Metalicity : 0.0
Absolute Magnitude: 6.7
Apparent Magnitude: 12.8
Right Ascension(RA) 179.7059
Declination (DEC) -3.3894
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
EPIC 201238110 b
EPIC 201238110 b

  • EPIC 201238110 b is an exoplanet orbiting the star EPIC 201238110, located about 521.8 light-years (160.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star EPIC 201238110 has apparent magnitude of 12.8, with absolute magnitude of 6.7.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • In this planetary system, the extrasolar planet EPIC 201238110 b orbits around the star EPIC 201238110 every 28.2 days with its orbital distance of 0.13 AU ( 20134424.4 km)
  • (Projected orbit of EPIC 201238110 b around its host star EPIC 201238110)


  • The Star EPIC 201238110 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.096 AU ( 14333830.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.132 AU ( 19813099.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.202 AU ( 30190779.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.297 AU ( 44427054.2 km)
  • Radiation at Planetary Boundary of EPIC 201238110 b : 1324.30 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star EPIC 201238110)



  • Kopparapu Recent Venus for Star EPIC 201238110 distance : 0.109 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star EPIC 201238110 distance : 0.137 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star EPIC 201238110 distance : 0.133 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star EPIC 201238110 distance : 0.146 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 201238110 distance : 0.270 AU
  • Kopparapu Outer Boundary for Early Mars for Star EPIC 201238110 distance : 0.285 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star EPIC 201238110)



  • Original Kopparapu Recent Venus for Star EPIC 201238110 distance : 0.108 AU
  • Original Kopparapu Runaway Greenhouse for Star EPIC 201238110 distance : 0.142 AU
  • Original Kopparapu Moist Greenhouse for Star EPIC 201238110 distance : 0.143 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 201238110 distance : 0.274 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star EPIC 201238110 distance : 0.285 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star EPIC 201238110)



    (Position in Stellar Map of star EPIC 201238110 and its Exoplanet EPIC 201238110 b)



    (Zoomed position in Stellar Map of star EPIC 201238110 and its Exoplanet EPIC 201238110 b (zoom level 3))

    (Synthetic Spectrum of star EPIC 201238110*)
    *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