Imaginary Picture of EPIC 211442297 b

Display orbital revolution of EPIC 211442297 b around the hoststar EPIC 211442297
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Exoplanet Name : EPIC 211442297 b
Alternate Name : K2_215 b
Status : Confirmed
Radius (Rjup / Re): 1.1150 (Rjup) 12.4980 (Rearth)
Mass (Mjup / Me): 0.8400 (Mjup) 267.0679 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1367 (AU) 0.1367 (AU Est.)
Eccentricity : 0.1370
Orbital Period(Yrs) 0.0555
Orbital Period(Observed/Estimated) 20.27 (Days Obs.) 20.25 (Days Est.)
Surface Gravity (G Earth) 1.7098
Star Radiation at Atmospheric Boundary: 48676.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 662.9 (K)
Blackbody T 0.3(K) 622.6 (K)
Blackbody T 0.7(K) 503.7 (K)
Tidally Locked Blackbody T 0.1(K) 788.4 (K)
Tidally Locked Blackbody T 0.3(K) 740.4 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : EPIC 211442297
Alternate Name :
Star Distance(LY) : 1360.1
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 10.7 (GY)
Temperature : 5560 (K)
Spectral type : G6
UV portion[%]: 7.1
Visible portion[%]: 43.6
IR portion[%]: 49.2
Metalicity : -0.2
Absolute Magnitude: 3.6
Apparent Magnitude: 11.7
Right Ascension(RA) 126.5534
Declination (DEC) 12.2819
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-basic?Ident=EPIC+211442297+&submit=SIMBAD+search
Open Exoplanet Database Link
EPIC 211442297 b
EPIC 211442297 b

  • EPIC 211442297 b is an exoplanet orbiting the star EPIC 211442297, located about 1360.1 light-years (417.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star EPIC 211442297 has apparent magnitude of 11.7, with absolute magnitude of 3.6.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5560 with its spectral types of G6
  • In this planetary system, the extrasolar planet EPIC 211442297 b orbits around the star EPIC 211442297 every 20.3 days with its orbital distance of 0.14 AU ( 20450028.9 km)
  • (Projected orbit of EPIC 211442297 b around its host star EPIC 211442297)


  • The Star EPIC 211442297 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.590 AU ( 88263999.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.816 AU ( 122003913.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.243 AU ( 185906965.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.829 AU ( 273570243.4 km)
  • Radiation at Planetary Boundary of EPIC 211442297 b : 48676.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star EPIC 211442297)



  • Kopparapu Recent Venus for Star EPIC 211442297 distance : 0.619 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star EPIC 211442297 distance : 0.784 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star EPIC 211442297 distance : 0.758 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star EPIC 211442297 distance : 0.831 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 211442297 distance : 1.394 AU
  • Kopparapu Outer Boundary for Early Mars for Star EPIC 211442297 distance : 1.470 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star EPIC 211442297)



  • Original Kopparapu Recent Venus for Star EPIC 211442297 distance : 0.618 AU
  • Original Kopparapu Runaway Greenhouse for Star EPIC 211442297 distance : 0.807 AU
  • Original Kopparapu Moist Greenhouse for Star EPIC 211442297 distance : 0.817 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 211442297 distance : 1.418 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star EPIC 211442297 distance : 1.475 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star EPIC 211442297)



    (Position in Stellar Map of star EPIC 211442297 and its Exoplanet EPIC 211442297 b)



    (Zoomed position in Stellar Map of star EPIC 211442297 and its Exoplanet EPIC 211442297 b (zoom level 3))

    (Synthetic Spectrum of star EPIC 211442297*)
    *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