Imaginary Picture of Kepler-189 c

Display orbital revolution of Kepler-189 c around the hoststar Kepler-189
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Exoplanet Name : Kepler-189 c
Alternate Name : "2MASS J19101553+4418180 c, K00574.01, KIC 8355239 c, KOI-574 c, KOI-574.01, WISE J191015.51+441818.1 c"
Status : Confirmed
Radius (Rjup / Re): 0.2120 (Rjup) 2.3763 (Rearth)
Mass (Mjup / Me): 0.0186 (Mjup) 5.9007 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1370 (AU) 0.1370 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0551
Orbital Period(Observed/Estimated) 20.13 (Days Obs.) 20.84 (Days Est.)
Surface Gravity (G Earth) 1.0450
Star Radiation at Atmospheric Boundary: 24511.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 558.5 (K)
Blackbody T 0.3(K) 524.4 (K)
Blackbody T 0.7(K) 424.3 (K)
Tidally Locked Blackbody T 0.1(K) 664.1 (K)
Tidally Locked Blackbody T 0.3(K) 623.7 (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-189
Alternate Name : "2MASS J19101553+4418180, KIC 8355239, KOI-574, WISE J191015.51+441818.1"
Star Distance(LY) : 1928.7
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5045 (K)
Spectral type : K0
UV portion[%]: 3.5
Visible portion[%]: 37.6
IR portion[%]: 58.8
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 13.4
Right Ascension(RA) 287.5647
Declination (DEC) 44.3050
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-189+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-189%20c/
Kepler-189 c
Kepler-189 c

  • Kepler-189 c is an exoplanet orbiting the star Kepler-189, located about 1928.7 light-years (591.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-189 has apparent magnitude of 13.4, with absolute magnitude of 4.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5045 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-189 c orbits around the star Kepler-189 every 20.1 days with its orbital distance of 0.14 AU ( 20494908.3 km)
  • (Projected orbit of Kepler-189 c around its host star Kepler-189)


  • The Star Kepler-189 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.420 AU ( 62771876.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.580 AU ( 86767137.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.884 AU ( 132213915.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.301 AU ( 194558569.0 km)
  • Radiation at Planetary Boundary of Kepler-189 c : 24511.94 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-189)



  • Kopparapu Recent Venus for Star Kepler-189 distance : 0.453 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-189 distance : 0.573 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-189 distance : 0.554 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-189 distance : 0.608 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-189 distance : 1.038 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-189 distance : 1.094 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-189)



  • Original Kopparapu Recent Venus for Star Kepler-189 distance : 0.448 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-189 distance : 0.591 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-189 distance : 0.593 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-189 distance : 1.055 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-189 distance : 1.097 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-189)



    (Position in Stellar Map of star Kepler-189 and its Exoplanet Kepler-189 c)



    (Zoomed position in Stellar Map of star Kepler-189 and its Exoplanet Kepler-189 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-189*)
    *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