Imaginary Picture of K2-368 c

Display orbital revolution of K2-368 c around the hoststar K2-368
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Exoplanet Name : K2-368 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1902 (Rjup) 2.1321 (Rearth)
Mass (Mjup / Me): 0.0168 (Mjup) 5.3345 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1317 (AU) 0.1317 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0553
Orbital Period(Observed/Estimated) 20.20 (Days Obs.) 20.21 (Days Est.)
Surface Gravity (G Earth) 1.1735
Star Radiation at Atmospheric Boundary: 14699.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 491.4 (K)
Blackbody T 0.3(K) 461.5 (K)
Blackbody T 0.7(K) 373.4 (K)
Tidally Locked Blackbody T 0.1(K) 584.4 (K)
Tidally Locked Blackbody T 0.3(K) 548.8 (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 : K2-368
Alternate Name : EPIC 206135682
Star Distance(LY) : 673.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4663 (K)
Spectral type : K4
UV portion[%]: 2.1
Visible portion[%]: 33.7
IR portion[%]: 64.3
Metalicity : -0.2
Absolute Magnitude: 7.0
Apparent Magnitude: 13.6
Right Ascension(RA) 332.6375
Declination (DEC) -11.1661
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
K2-368 c
K2-368 c

  • K2-368 c is an exoplanet orbiting the star K2-368, located about 673.9 light-years (206.6 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star K2-368 has apparent magnitude of 13.6, with absolute magnitude of 7.0.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4663 with its spectral types of K4
  • In this planetary system, the extrasolar planet K2-368 c orbits around the star K2-368 every 20.2 days with its orbital distance of 0.13 AU ( 19698299.6 km)
  • (Projected orbit of K2-368 c around its host star K2-368)


  • The Star K2-368 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.312 AU ( 46719961.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.432 AU ( 64579195.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.658 AU ( 98404402.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.968 AU ( 144806389.3 km)
  • Radiation at Planetary Boundary of K2-368 c : 14698.97 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-368)



  • Kopparapu Recent Venus for Star K2-368 distance : 0.343 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-368 distance : 0.434 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-368 distance : 0.419 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-368 distance : 0.460 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-368 distance : 0.798 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-368 distance : 0.842 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-368)



  • Original Kopparapu Recent Venus for Star K2-368 distance : 0.338 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-368 distance : 0.448 AU
  • Original Kopparapu Moist Greenhouse for Star K2-368 distance : 0.448 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-368 distance : 0.811 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-368 distance : 0.844 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-368)



    (Position in Stellar Map of star K2-368 and its Exoplanet K2-368 c)



    (Zoomed position in Stellar Map of star K2-368 and its Exoplanet K2-368 c (zoom level 3))

    (Synthetic Spectrum of star K2-368*)
    *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