Imaginary Picture of EPIC 246851721 b
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Exoplanet Name : EPIC 246851721 b
Alternate Name :
Radius (Rjup / Re): 1.0040 (Rjup) 11.2538 (Rearth)
Mass (Mjup / Me): 5.7400 (Mjup) 1824.9641 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0724 (AU) 0.0724 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0169
Orbital Period(Observed/Estimated) 6.18 (Days Obs.) 6.18 (Days Est.)
Star Radiation at Atmospheric Boundary: 905527.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1376.8 (K)
Blackbody T 0.3(K) 1293.0 (K)
Blackbody T 0.7(K) 1046.1 (K)
Tidally Locked Blackbody T 0.1(K) 1637.3 (K)
Tidally Locked Blackbody T 0.3(K) 1537.6 (K)
Size Class: Jupiter-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 : EPIC 246851721
Alternate Name : "2MASS J05154075+1616435, TYC 1283-739-1"
Star Distance(LY) : 1226.3
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 3.1 (GY)
Temperature : 6189 (K)
Spectral type : F5V
Metalicity : 0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 11.4
Right Ascension(RA) 78.9198
Declination (DEC) 16.2787
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
EPIC 246851721 b
EPIC 246851721 b

  • EPIC 246851721 b is an exoplanet orbiting the star EPIC 246851721, located about 1226.3 light-years (376.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star EPIC 246851721 has apparent magnitude of 11.4, with absolute magnitude of 3.5.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6189 with its spectral types of F5V
  • In this planetary system, the extrasolar planet EPIC 246851721 b orbits around the star EPIC 246851721 every 6.2 days with its orbital distance of 0.07 AU ( 10829389.9 km)
  • (Projected orbit of EPIC 246851721 b around its host star EPIC 246851721)


  • The Star EPIC 246851721 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.348 AU ( 201597481.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.863 AU ( 278660403.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.838 AU ( 424616787.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.177 AU ( 624842204.0 km)
  • Radiation at Planetary Boundary of EPIC 246851721 b : 905527.49 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star EPIC 246851721)



  • Kopparapu Recent Venus for Star EPIC 246851721 distance : 1.362 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star EPIC 246851721 distance : 1.725 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star EPIC 246851721 distance : 1.666 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star EPIC 246851721 distance : 1.826 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 246851721 distance : 3.017 AU
  • Kopparapu Outer Boundary for Early Mars for Star EPIC 246851721 distance : 3.183 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star EPIC 246851721)



  • Original Kopparapu Recent Venus for Star EPIC 246851721 distance : 1.376 AU
  • Original Kopparapu Runaway Greenhouse for Star EPIC 246851721 distance : 1.770 AU
  • Original Kopparapu Moist Greenhouse for Star EPIC 246851721 distance : 1.821 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 246851721 distance : 3.072 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star EPIC 246851721 distance : 3.194 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star EPIC 246851721)



    (Position in Stellar Map of star EPIC 246851721 and its Exoplanet EPIC 246851721 b)



    (Zoomed position in Stellar Map of star EPIC 246851721 and its Exoplanet EPIC 246851721 b (zoom level 3))