Imaginary Picture of K2-147 b
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Exoplanet Name : K2-147 b
Alternate Name : EPIC 213715787 b
Radius (Rjup / Re): 0.1230 (Rjup) 1.3787 (Rearth)
Mass (Mjup / Me): 0.0098 (Mjup) 3.1252 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0159 (AU) 0.0159 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0026
Orbital Period(Observed/Estimated) 0.96 (Days Obs.) 0.96 (Days Est.)
Star Radiation at Atmospheric Boundary: 270670.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1018.0 (K)
Blackbody T 0.3(K) 956.0 (K)
Blackbody T 0.7(K) 773.5 (K)
Tidally Locked Blackbody T 0.1(K) 1210.6 (K)
Tidally Locked Blackbody T 0.3(K) 1136.9 (K)
Size Class: super-Earth-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 : K2-147
Alternate Name : "2MASS J19351996-2829523, EPIC 213715787"
Star Distance(LY) : 287.0
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3672 (K)
Spectral type : M2
Metalicity : 0.2
Absolute Magnitude: 17.3
Apparent Magnitude: 22.0
Right Ascension(RA) 293.8332
Declination (DEC) -28.4978
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?Ident=K2-147&submit=submit+id
Open Exoplanet Database Link
K2-147 b
K2-147 b

  • K2-147 b is an exoplanet orbiting the star K2-147, located about 287.0 light-years (88.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star K2-147 has apparent magnitude of 22.0, with absolute magnitude of 17.3.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3672 with its spectral types of M2
  • In this planetary system, the extrasolar planet K2-147 b orbits around the star K2-147 every 1.0 days with its orbital distance of 0.02 AU ( 2378606.1 km)
  • (Projected orbit of K2-147 b around its host star K2-147)


  • The Star K2-147 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.162 AU ( 24208797.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.224 AU ( 33462885.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.341 AU ( 50990031.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.502 AU ( 75034065.0 km)
  • Radiation at Planetary Boundary of K2-147 b : 270670.41 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-147)



  • Kopparapu Recent Venus for Star K2-147 distance : 0.182 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-147 distance : 0.231 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-147 distance : 0.223 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-147 distance : 0.245 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-147 distance : 0.445 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-147 distance : 0.470 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-147)



  • Original Kopparapu Recent Venus for Star K2-147 distance : 0.181 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-147 distance : 0.239 AU
  • Original Kopparapu Moist Greenhouse for Star K2-147 distance : 0.239 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-147 distance : 0.452 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-147 distance : 0.471 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-147)



    (Position in Stellar Map of star K2-147 and its Exoplanet K2-147 b)



    (Zoomed position in Stellar Map of star K2-147 and its Exoplanet K2-147 b (zoom level 3))