Imaginary Picture of K2-148 d
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Exoplanet Name : K2-148 d
Alternate Name : EPIC 220194974 d
Radius (Rjup / Re): 0.1460 (Rjup) 1.6365 (Rearth)
Mass (Mjup / Me): 0.0131 (Mjup) 4.1712 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0774 (AU) 0.0774 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0267
Orbital Period(Observed/Estimated) 9.76 (Days Obs.) 9.76 (Days Est.)
Star Radiation at Atmospheric Boundary: 22634.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 547.4 (K)
Blackbody T 0.3(K) 514.1 (K)
Blackbody T 0.7(K) 416.0 (K)
Tidally Locked Blackbody T 0.1(K) 651.0 (K)
Tidally Locked Blackbody T 0.3(K) 611.4 (K)
Size Class: super-Earth-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 : K2-148
Alternate Name : "2MASS J00580427-0011353, EPIC 220194974"
Star Distance(LY) : 394.6
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4079 (K)
Spectral type : K7
Metalicity : -0.1
Absolute Magnitude: 16.6
Apparent Magnitude: 22.0
Right Ascension(RA) 14.5178
Declination (DEC) -0.1932
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-id?Ident=EPIC+220194974&submit=submit+id
Open Exoplanet Database Link
K2-148 d
K2-148 d

  • K2-148 d is an exoplanet orbiting the star K2-148, located about 394.6 light-years (121.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star K2-148 has apparent magnitude of 22.0, with absolute magnitude of 16.6.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4079 with its spectral types of K7
  • In this planetary system, the extrasolar planet K2-148 d orbits around the star K2-148 every 9.8 days with its orbital distance of 0.08 AU ( 11578875.2 km)
  • (Projected orbit of K2-148 d around its host star K2-148)


  • The Star K2-148 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.228 AU ( 34078667.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.315 AU ( 47105623.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.480 AU ( 71778546.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.706 AU ( 105625275.4 km)
  • Radiation at Planetary Boundary of K2-148 d : 22634.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-148)



  • Kopparapu Recent Venus for Star K2-148 distance : 0.255 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-148 distance : 0.322 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-148 distance : 0.311 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-148 distance : 0.342 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-148 distance : 0.610 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-148 distance : 0.643 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-148)



  • Original Kopparapu Recent Venus for Star K2-148 distance : 0.252 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-148 distance : 0.333 AU
  • Original Kopparapu Moist Greenhouse for Star K2-148 distance : 0.333 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-148 distance : 0.619 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-148 distance : 0.644 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-148)



    (Position in Stellar Map of star K2-148 and its Exoplanet K2-148 d)



    (Zoomed position in Stellar Map of star K2-148 and its Exoplanet K2-148 d (zoom level 3))