Imaginary Picture of K2-349 b

Display orbital revolution of K2-349 b around the hoststar K2-349
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Exoplanet Name : K2-349 b
Alternate Name : "EPIC 212420823 b, EPIC 212420823.01"
Status : Confirmed
Radius (Rjup / Re): 0.1231 (Rjup) 1.3798 (Rearth)
Mass (Mjup / Me): 0.0099 (Mjup) 3.1345 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0692 (AU) 0.0692 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0247
Orbital Period(Observed/Estimated) 9.03 (Days Obs.) 9.04 (Days Est.)
Surface Gravity (G Earth) 1.6464
Star Radiation at Atmospheric Boundary: 22766.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 548.2 (K)
Blackbody T 0.3(K) 514.8 (K)
Blackbody T 0.7(K) 416.6 (K)
Tidally Locked Blackbody T 0.1(K) 652.0 (K)
Tidally Locked Blackbody T 0.3(K) 612.3 (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 : K2-349
Alternate Name : EPIC 212420823
Star Distance(LY) : 1479.3
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4385 (K)
Spectral type : sdK7
UV portion[%]: 1.2
Visible portion[%]: 29.1
IR portion[%]: 69.7
Metalicity : -0.7
Absolute Magnitude: 6.1
Apparent Magnitude: 14.4
Right Ascension(RA) 199.0997
Declination (DEC) -14.4446
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
K2-349 b
K2-349 b

  • K2-349 b is an exoplanet orbiting the star K2-349, located about 1479.3 light-years (453.6 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star K2-349 has apparent magnitude of 14.4, with absolute magnitude of 6.1.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 4385 with its spectral types of sdK7
  • In this planetary system, the extrasolar planet K2-349 b orbits around the star K2-349 every 9.0 days with its orbital distance of 0.07 AU ( 10344692.8 km)
  • (Projected orbit of K2-349 b around its host star K2-349)


  • The Star K2-349 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.204 AU ( 30534681.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.282 AU ( 42206908.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.430 AU ( 64313988.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.633 AU ( 94640851.9 km)
  • Radiation at Planetary Boundary of K2-349 b : 22766.22 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-349)



  • Kopparapu Recent Venus for Star K2-349 distance : 0.226 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-349 distance : 0.286 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-349 distance : 0.277 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-349 distance : 0.304 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-349 distance : 0.534 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-349 distance : 0.563 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-349)



  • Original Kopparapu Recent Venus for Star K2-349 distance : 0.223 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-349 distance : 0.296 AU
  • Original Kopparapu Moist Greenhouse for Star K2-349 distance : 0.295 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-349 distance : 0.542 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-349 distance : 0.564 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-349)



    (Position in Stellar Map of star K2-349 and its Exoplanet K2-349 b)



    (Zoomed position in Stellar Map of star K2-349 and its Exoplanet K2-349 b (zoom level 3))

    (Synthetic Spectrum of star K2-349*)
    *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