Imaginary Picture of Kepler-173 c

Display orbital revolution of Kepler-173 c around the hoststar Kepler-173
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Exoplanet Name : Kepler-173 c
Alternate Name : "2MASS J19383520+4153027 c, K00511.01, KIC 6451936 c, KOI-511 c, KOI-511.01, WISE J193835.21+415302.8 c"
Status : Confirmed
Radius (Rjup / Re): 0.2170 (Rjup) 2.4324 (Rearth)
Mass (Mjup / Me): 0.0190 (Mjup) 6.0300 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0740 (AU) 0.0740 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0219
Orbital Period(Observed/Estimated) 8.01 (Days Obs.) 8.33 (Days Est.)
Surface Gravity (G Earth) 1.0192
Star Radiation at Atmospheric Boundary: 338799.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1076.8 (K)
Blackbody T 0.3(K) 1011.2 (K)
Blackbody T 0.7(K) 818.2 (K)
Tidally Locked Blackbody T 0.1(K) 1280.5 (K)
Tidally Locked Blackbody T 0.3(K) 1202.5 (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-173
Alternate Name : "2MASS J19383520+4153027, KIC 6451936, KOI-511, WISE J193835.21+415302.8"
Star Distance(LY) : 2716.6
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5941 (K)
Spectral type : G0
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.8
Absolute Magnitude: 3.5
Apparent Magnitude: 13.1
Right Ascension(RA) 294.6467
Declination (DEC) 41.8841
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-173+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-173%20c/
Kepler-173 c
Kepler-173 c

  • Kepler-173 c is an exoplanet orbiting the star Kepler-173, located about 2716.6 light-years (832.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-173 has apparent magnitude of 13.1, with absolute magnitude of 3.5.
  • It is 0.8 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5941 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-173 c orbits around the star Kepler-173 every 8.0 days with its orbital distance of 0.07 AU ( 11070242.4 km)
  • (Projected orbit of Kepler-173 c around its host star Kepler-173)


  • The Star Kepler-173 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.843 AU ( 126054632.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.165 AU ( 174240444.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.775 AU ( 265503878.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.612 AU ( 390700587.8 km)
  • Radiation at Planetary Boundary of Kepler-173 c : 338799.51 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-173)



  • Kopparapu Recent Venus for Star Kepler-173 distance : 0.865 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-173 distance : 1.095 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-173 distance : 1.058 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-173 distance : 1.159 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-173 distance : 1.926 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-173 distance : 2.031 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-173)



  • Original Kopparapu Recent Venus for Star Kepler-173 distance : 0.869 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-173 distance : 1.125 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-173 distance : 1.150 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-173 distance : 1.960 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-173 distance : 2.038 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-173)



    (Position in Stellar Map of star Kepler-173 and its Exoplanet Kepler-173 c)



    (Zoomed position in Stellar Map of star Kepler-173 and its Exoplanet Kepler-173 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-173*)
    *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