Imaginary Picture of EPIC 218916923 b
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Exoplanet Name : EPIC 218916923 b
Alternate Name :
Radius (Rjup / Re): 0.8120 (Rjup) 9.1017 (Rearth)
Mass (Mjup / Me): 0.3810 (Mjup) 121.1344 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1811 (AU) 0.1811 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0777
Orbital Period(Observed/Estimated) 28.38 (Days Obs.) 29.38 (Days Est.)
Star Radiation at Atmospheric Boundary: 21607.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 541.1 (K)
Blackbody T 0.3(K) 508.2 (K)
Blackbody T 0.7(K) 411.2 (K)
Tidally Locked Blackbody T 0.1(K) 643.5 (K)
Tidally Locked Blackbody T 0.3(K) 604.3 (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 218916923
Alternate Name :
Star Distance(LY) : 495.8
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 1.8 (GY)
Temperature : 5287 (K)
Spectral type : K0
Metalicity : 0.2
Absolute Magnitude: 5.8
Apparent Magnitude: 11.7
Right Ascension(RA) 289.0665
Declination (DEC) -17.9106
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=EPIC+218916923&submit=SIMBAD+search
Open Exoplanet Database Link
EPIC 218916923 b
EPIC 218916923 b

  • EPIC 218916923 b is an exoplanet orbiting the star EPIC 218916923, located about 495.8 light-years (152.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star EPIC 218916923 has apparent magnitude of 11.7, with absolute magnitude of 5.8.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5287 with its spectral types of K0
  • In this planetary system, the extrasolar planet EPIC 218916923 b orbits around the star EPIC 218916923 every 28.4 days with its orbital distance of 0.18 AU ( 27092174.4 km)
  • (Projected orbit of EPIC 218916923 b around its host star EPIC 218916923)


  • The Star EPIC 218916923 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.521 AU ( 77906767.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.720 AU ( 107687512.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.097 AU ( 164091937.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.614 AU ( 241468473.9 km)
  • Radiation at Planetary Boundary of EPIC 218916923 b : 21607.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star EPIC 218916923)



  • Kopparapu Recent Venus for Star EPIC 218916923 distance : 0.555 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star EPIC 218916923 distance : 0.703 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star EPIC 218916923 distance : 0.679 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star EPIC 218916923 distance : 0.745 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 218916923 distance : 1.260 AU
  • Kopparapu Outer Boundary for Early Mars for Star EPIC 218916923 distance : 1.329 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star EPIC 218916923)



  • Original Kopparapu Recent Venus for Star EPIC 218916923 distance : 0.551 AU
  • Original Kopparapu Runaway Greenhouse for Star EPIC 218916923 distance : 0.724 AU
  • Original Kopparapu Moist Greenhouse for Star EPIC 218916923 distance : 0.729 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 218916923 distance : 1.282 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star EPIC 218916923 distance : 1.333 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star EPIC 218916923)



    (Position in Stellar Map of star EPIC 218916923 and its Exoplanet EPIC 218916923 b)



    (Zoomed position in Stellar Map of star EPIC 218916923 and its Exoplanet EPIC 218916923 b (zoom level 3))