Imaginary Picture of K2-336 b

Display orbital revolution of K2-336 b around the hoststar K2-336
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Exoplanet Name : K2-336 b
Alternate Name : "EPIC 211763214 b, EPIC 211763214.01"
Status : Confirmed
Radius (Rjup / Re): 0.1088 (Rjup) 1.2195 (Rearth)
Mass (Mjup / Me): 0.0063 (Mjup) 1.9999 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1426 (AU) 0.1426 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0580
Orbital Period(Observed/Estimated) 21.19 (Days Obs.) 21.21 (Days Est.)
Surface Gravity (G Earth) 1.3447
Star Radiation at Atmospheric Boundary: 33406.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 603.4 (K)
Blackbody T 0.3(K) 566.6 (K)
Blackbody T 0.7(K) 458.5 (K)
Tidally Locked Blackbody T 0.1(K) 717.6 (K)
Tidally Locked Blackbody T 0.3(K) 673.9 (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 : K2-336
Alternate Name : EPIC 211763214
Star Distance(LY) : 780.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5424 (K)
Spectral type : G6V
UV portion[%]: 6.5
Visible portion[%]: 42.6
IR portion[%]: 50.8
Metalicity : -0.2
Absolute Magnitude: 5.8
Apparent Magnitude: 12.7
Right Ascension(RA) 133.8380
Declination (DEC) 16.7942
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
K2-336 b
K2-336 b

  • K2-336 b is an exoplanet orbiting the star K2-336, located about 780.5 light-years (239.3 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star K2-336 has apparent magnitude of 12.7, with absolute magnitude of 5.8.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5424 with its spectral types of G6V
  • In this planetary system, the extrasolar planet K2-336 b orbits around the star K2-336 every 21.2 days with its orbital distance of 0.14 AU ( 21332656.4 km)
  • (Projected orbit of K2-336 b around its host star K2-336)


  • The Star K2-336 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.510 AU ( 76275921.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.705 AU ( 105433256.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.074 AU ( 160656950.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.580 AU ( 236413740.3 km)
  • Radiation at Planetary Boundary of K2-336 b : 33406.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-336)



  • Kopparapu Recent Venus for Star K2-336 distance : 0.539 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-336 distance : 0.683 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-336 distance : 0.660 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-336 distance : 0.724 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-336 distance : 1.219 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-336 distance : 1.286 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-336)



  • Original Kopparapu Recent Venus for Star K2-336 distance : 0.537 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-336 distance : 0.703 AU
  • Original Kopparapu Moist Greenhouse for Star K2-336 distance : 0.710 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-336 distance : 1.240 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-336 distance : 1.290 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-336)



    (Position in Stellar Map of star K2-336 and its Exoplanet K2-336 b)



    (Zoomed position in Stellar Map of star K2-336 and its Exoplanet K2-336 b (zoom level 3))

    (Synthetic Spectrum of star K2-336*)
    *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