Imaginary Picture of K2-100 b

Display orbital revolution of K2-100 b around the hoststar K2-100
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Exoplanet Name : K2-100 b
Alternate Name : "K2-100 b, 2MASS J08382429+2006217 b, EPIC 211990866 b, EPIC 211990866.01, TYC 1398-142-1 b, WISE J083824.27+200621.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.3200 (Rjup) 3.5869 (Rearth)
Mass (Mjup / Me): 0.0272 (Mjup) 8.6537 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0296 (AU) 0.0296 (AU Est.)
Eccentricity : 0.2400
Orbital Period(Yrs) 0.0046
Orbital Period(Observed/Estimated) 1.67 (Days Obs.) 1.68 (Days Est.)
Surface Gravity (G Earth) 0.6726
Star Radiation at Atmospheric Boundary: 3015216.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1859.8 (K)
Blackbody T 0.3(K) 1746.6 (K)
Blackbody T 0.7(K) 1413.2 (K)
Tidally Locked Blackbody T 0.1(K) 2211.7 (K)
Tidally Locked Blackbody T 0.3(K) 2077.0 (K)
Size Class: Neptune-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 : K2-100
Alternate Name : "2MASS J08382429+2006217, EPIC 211990866, TYC 1398-142-1, WISE J083824.27+200621.7"
Star Distance(LY) : 596.0
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.8 (GY)
Temperature : 6168 (K)
Spectral type : G0 V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.3
Absolute Magnitude: 3.2
Apparent Magnitude: 9.5
Right Ascension(RA) 129.6012
Declination (DEC) 20.1061
Hubble Space Telescope Guide Star Catalog (GSC) ID 01398-00142
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+211990866+&submit=SIMBAD+search
Open Exoplanet Database Link
K2-100 b
K2-100 b

  • K2-100 b is an exoplanet orbiting the star K2-100, located about 596.0 light-years (182.7 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star K2-100 has apparent magnitude of 9.5, with absolute magnitude of 3.2.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6168 with its spectral types of G0 V
  • In this planetary system, the extrasolar planet K2-100 b orbits around the star K2-100 every 1.7 days with its orbital distance of 0.03 AU ( 4428097.0 km)
  • (Projected orbit of K2-100 b around its host star K2-100)


  • The Star K2-100 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.005 AU ( 150420377.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.390 AU ( 207920270.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.118 AU ( 316824480.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.116 AU ( 466221101.5 km)
  • Radiation at Planetary Boundary of K2-100 b : 3015216.56 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-100)



  • Kopparapu Recent Venus for Star K2-100 distance : 1.018 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-100 distance : 1.289 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-100 distance : 1.245 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-100 distance : 1.364 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-100 distance : 2.255 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-100 distance : 2.379 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-100)



  • Original Kopparapu Recent Venus for Star K2-100 distance : 1.027 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-100 distance : 1.323 AU
  • Original Kopparapu Moist Greenhouse for Star K2-100 distance : 1.360 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-100 distance : 2.296 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-100 distance : 2.387 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-100)



    (Position in Stellar Map of star K2-100 and its Exoplanet K2-100 b)



    (Zoomed position in Stellar Map of star K2-100 and its Exoplanet K2-100 b (zoom level 3))

    (Synthetic Spectrum of star K2-100*)
    *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