Imaginary Picture of K2-190 c

Display orbital revolution of K2-190 c around the hoststar K2-190
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Exoplanet Name : K2-190 c
Alternate Name : "2MASS J13412725-1309392 c, EPIC 212480208 c, EPIC 212480208.02, TYC 5552-1202-1 c, WISE J134127.17-130939.0 c"
Status : Confirmed
Radius (Rjup / Re): 0.0980 (Rjup) 1.0985 (Rearth)
Mass (Mjup / Me): 0.0043 (Mjup) 1.3709 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1464 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0591
Orbital Period(Observed/Estimated) 21.57 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1361
Star Radiation at Atmospheric Boundary: 47615.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 659.3 (K)
Blackbody T 0.3(K) 619.1 (K)
Blackbody T 0.7(K) 501.0 (K)
Tidally Locked Blackbody T 0.1(K) 784.0 (K)
Tidally Locked Blackbody T 0.3(K) 736.3 (K)
Size Class: 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 : K2-190
Alternate Name : "2MASS J13412725-1309392, EPIC 212480208, TYC 5552-1202-1, WISE J134127.17-130939.0"
Star Distance(LY) : 526.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5631 (K)
Spectral type : G5
UV portion[%]: 7.4
Visible portion[%]: 44.0
IR portion[%]: 48.6
Metalicity : -0.2
Absolute Magnitude: 3.8
Apparent Magnitude: 9.8
Right Ascension(RA) 205.3635
Declination (DEC) -13.1609
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
K2-190 c
K2-190 c

  • K2-190 c is an exoplanet orbiting the star K2-190, located about 526.5 light-years (161.4 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star K2-190 has apparent magnitude of 9.8, with absolute magnitude of 3.8.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5631 with its spectral types of G5
  • In this planetary system, the extrasolar planet K2-190 c orbits around the star K2-190 every 21.6 days with its orbital distance of 0.15 AU ( 21906190.3 km)
  • (Projected orbit of K2-190 c around its host star K2-190)


  • The Star K2-190 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.625 AU ( 93512692.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.864 AU ( 129258978.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.317 AU ( 196962077.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.937 AU ( 289838325.7 km)
  • Radiation at Planetary Boundary of K2-190 c : 47615.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-190)



  • Kopparapu Recent Venus for Star K2-190 distance : 0.654 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-190 distance : 0.828 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-190 distance : 0.799 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-190 distance : 0.877 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-190 distance : 1.468 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-190 distance : 1.548 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-190)



  • Original Kopparapu Recent Venus for Star K2-190 distance : 0.653 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-190 distance : 0.851 AU
  • Original Kopparapu Moist Greenhouse for Star K2-190 distance : 0.863 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-190 distance : 1.493 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-190 distance : 1.553 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-190)



    (Position in Stellar Map of star K2-190 and its Exoplanet K2-190 c)



    (Zoomed position in Stellar Map of star K2-190 and its Exoplanet K2-190 c (zoom level 3))

    (Synthetic Spectrum of star K2-190*)
    *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