Imaginary Picture of K2-152 b
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Exoplanet Name : K2-152 b
Alternate Name : EPIC 201128338 b
Radius (Rjup / Re): 0.2510 (Rjup) 2.8135 (Rearth)
Mass (Mjup / Me): 0.0217 (Mjup) 6.9041 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1735 (AU) 0.1735 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0894
Orbital Period(Observed/Estimated) 32.65 (Days Obs.) 32.64 (Days Est.)
Star Radiation at Atmospheric Boundary: 3908.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 352.9 (K)
Blackbody T 0.3(K) 331.4 (K)
Blackbody T 0.7(K) 268.1 (K)
Tidally Locked Blackbody T 0.1(K) 419.7 (K)
Tidally Locked Blackbody T 0.3(K) 394.1 (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 : K2-152
Alternate Name : "2MASS J12063188-0549386, EPIC 201128338"
Star Distance(LY) : 365.3
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3940 (K)
Spectral type : M0.0V
Metalicity : 0.1
Absolute Magnitude: 16.8
Apparent Magnitude: 22.0
Right Ascension(RA) 181.6328
Declination (DEC) -5.8274
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=EPIC%20201128338
Open Exoplanet Database Link
K2-152 b
K2-152 b

  • K2-152 b is an exoplanet orbiting the star K2-152, located about 365.3 light-years (112.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star K2-152 has apparent magnitude of 22.0, with absolute magnitude of 16.8.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3940 with its spectral types of M0.0V
  • In this planetary system, the extrasolar planet K2-152 b orbits around the star K2-152 every 32.7 days with its orbital distance of 0.17 AU ( 25955230.6 km)
  • (Projected orbit of K2-152 b around its host star K2-152)


  • The Star K2-152 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.212 AU ( 31745335.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.293 AU ( 43880349.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.447 AU ( 66863941.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.658 AU ( 98393218.8 km)
  • Radiation at Planetary Boundary of K2-152 b : 3908.85 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-152)



  • Kopparapu Recent Venus for Star K2-152 distance : 0.238 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-152 distance : 0.301 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-152 distance : 0.291 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-152 distance : 0.320 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-152 distance : 0.573 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-152 distance : 0.605 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-152)



  • Original Kopparapu Recent Venus for Star K2-152 distance : 0.235 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-152 distance : 0.312 AU
  • Original Kopparapu Moist Greenhouse for Star K2-152 distance : 0.311 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-152 distance : 0.583 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-152 distance : 0.606 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-152)



    (Position in Stellar Map of star K2-152 and its Exoplanet K2-152 b)



    (Zoomed position in Stellar Map of star K2-152 and its Exoplanet K2-152 b (zoom level 3))