Imaginary Picture of Kepler-198 c

Display orbital revolution of Kepler-198 c around the hoststar Kepler-198
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Exoplanet Name : Kepler-198 c
Alternate Name : "2MASS J19224155+3841276 c, K00624.02, KIC 3541946 c, KOI-624 c, KOI-624.02, WISE J192241.55+384127.6 c"
Status : Confirmed
Radius (Rjup / Re): 0.2200 (Rjup) 2.4660 (Rearth)
Mass (Mjup / Me): 0.0192 (Mjup) 6.1075 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2590 (AU) 0.2590 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1357
Orbital Period(Observed/Estimated) 49.57 (Days Obs.) 49.92 (Days Est.)
Surface Gravity (G Earth) 1.0043
Star Radiation at Atmospheric Boundary: 15423.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 497.4 (K)
Blackbody T 0.3(K) 467.1 (K)
Blackbody T 0.7(K) 377.9 (K)
Tidally Locked Blackbody T 0.1(K) 591.5 (K)
Tidally Locked Blackbody T 0.3(K) 555.5 (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 : Kepler-198
Alternate Name : "2MASS J19224155+3841276, KIC 3541946, KOI-624, WISE J192241.55+384127.6"
Star Distance(LY) : 1615.0
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5681 (K)
Spectral type : G6
UV portion[%]: 7.5
Visible portion[%]: 44.3
IR portion[%]: 48.1
Metalicity : -0.1
Absolute Magnitude: 3.9
Apparent Magnitude: 12.4
Right Ascension(RA) 290.6731
Declination (DEC) 38.6910
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-198+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-198%20c/
Kepler-198 c
Kepler-198 c

  • Kepler-198 c is an exoplanet orbiting the star Kepler-198, located about 1615.0 light-years (495.2 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-198 has apparent magnitude of 12.4, with absolute magnitude of 3.9.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5681 with its spectral types of G6
  • In this planetary system, the extrasolar planet Kepler-198 c orbits around the star Kepler-198 every 49.6 days with its orbital distance of 0.26 AU ( 38745848.5 km)
  • (Projected orbit of Kepler-198 c around its host star Kepler-198)


  • The Star Kepler-198 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.629 AU ( 94134799.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.870 AU ( 130118892.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.325 AU ( 198272397.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.950 AU ( 291766518.6 km)
  • Radiation at Planetary Boundary of Kepler-198 c : 15423.73 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-198)



  • Kopparapu Recent Venus for Star Kepler-198 distance : 0.656 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-198 distance : 0.831 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-198 distance : 0.802 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-198 distance : 0.880 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-198 distance : 1.471 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-198 distance : 1.551 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-198)



  • Original Kopparapu Recent Venus for Star Kepler-198 distance : 0.656 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-198 distance : 0.854 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-198 distance : 0.867 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-198 distance : 1.497 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-198 distance : 1.556 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-198)



    (Position in Stellar Map of star Kepler-198 and its Exoplanet Kepler-198 c)



    (Zoomed position in Stellar Map of star Kepler-198 and its Exoplanet Kepler-198 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-198*)
    *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