Imaginary Picture of K2-48 b

Display orbital revolution of K2-48 b around the hoststar K2-48
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Exoplanet Name : K2-48 b
Alternate Name : EPIC 201677835.01
Status : Confirmed
Radius (Rjup / Re): 0.2000 (Rjup) 2.2418 (Rearth)
Mass (Mjup / Me): 0.0176 (Mjup) 5.5894 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1344 (AU) 0.1344 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0561
Orbital Period(Observed/Estimated) 20.51 (Days Obs.) 20.51 (Days Est.)
Surface Gravity (G Earth) 1.1122
Star Radiation at Atmospheric Boundary: 20839.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 536.2 (K)
Blackbody T 0.3(K) 503.6 (K)
Blackbody T 0.7(K) 407.5 (K)
Tidally Locked Blackbody T 0.1(K) 637.7 (K)
Tidally Locked Blackbody T 0.3(K) 598.9 (K)
Size Class: sub-Neptune-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 : K2-48
Alternate Name : "2MASS J11442963+0316205, EPIC 201677835, WISE J114429.60+031620.7"
Star Distance(LY) : 1037.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4899 (K)
Spectral type : K2
UV portion[%]: 2.8
Visible portion[%]: 36.1
IR portion[%]: 61.1
Metalicity : 0.0
Absolute Magnitude: 4.9
Apparent Magnitude: 12.4
Right Ascension(RA) 176.1235
Declination (DEC) 3.2724
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=K2-48+&submit=SIMBAD+search
Open Exoplanet Database Link
K2-48 b
K2-48 b

  • K2-48 b is an exoplanet orbiting the star K2-48, located about 1037.9 light-years (318.2 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star K2-48 has apparent magnitude of 12.4, with absolute magnitude of 4.9.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4899 with its spectral types of K2
  • In this planetary system, the extrasolar planet K2-48 b orbits around the star K2-48 every 20.5 days with its orbital distance of 0.13 AU ( 20105953.8 km)
  • (Projected orbit of K2-48 b around its host star K2-48)


  • The Star K2-48 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.380 AU ( 56780060.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.525 AU ( 78484882.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.799 AU ( 119593591.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.176 AU ( 175987209.2 km)
  • Radiation at Planetary Boundary of K2-48 b : 20839.23 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-48)



  • Kopparapu Recent Venus for Star K2-48 distance : 0.413 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-48 distance : 0.522 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-48 distance : 0.504 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-48 distance : 0.554 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-48 distance : 0.951 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-48 distance : 1.003 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-48)



  • Original Kopparapu Recent Venus for Star K2-48 distance : 0.408 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-48 distance : 0.538 AU
  • Original Kopparapu Moist Greenhouse for Star K2-48 distance : 0.540 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-48 distance : 0.966 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-48 distance : 1.005 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-48)



    (Position in Stellar Map of star K2-48 and its Exoplanet K2-48 b)



    (Zoomed position in Stellar Map of star K2-48 and its Exoplanet K2-48 b (zoom level 3))

    (Synthetic Spectrum of star K2-48*)
    *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