Imaginary Picture of Kepler-340 c

Display orbital revolution of Kepler-340 c around the hoststar Kepler-340
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Exoplanet Name : Kepler-340 c
Alternate Name : "2MASS J19434403+4018020 c, K01932.01, KIC 5202905 c, KOI-1932 c, KOI-1932.01, WISE J194344.02+401802.0 c"
Status : Confirmed
Radius (Rjup / Re): 0.3010 (Rjup) 3.3739 (Rearth)
Mass (Mjup / Me): 0.0257 (Mjup) 8.1748 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1780 (AU) 0.1780 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0625
Orbital Period(Observed/Estimated) 22.82 (Days Obs.) 18.88 (Days Est.)
Surface Gravity (G Earth) 0.7181
Star Radiation at Atmospheric Boundary: 208806.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 954.1 (K)
Blackbody T 0.3(K) 896.0 (K)
Blackbody T 0.7(K) 724.9 (K)
Tidally Locked Blackbody T 0.1(K) 1134.6 (K)
Tidally Locked Blackbody T 0.3(K) 1065.5 (K)
Size Class: 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-340
Alternate Name : "2MASS J19434403+4018020, KIC 5202905, KOI-1932, WISE J194344.02+401802.0"
Star Distance(LY) : 2638.1
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 2.1 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6620 (K)
Spectral type : F6
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 2.2
Apparent Magnitude: 11.7
Right Ascension(RA) 295.9335
Declination (DEC) 40.3006
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-340+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-340%20c/
Kepler-340 c
Kepler-340 c

  • Kepler-340 c is an exoplanet orbiting the star Kepler-340, located about 2638.1 light-years (808.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-340 has apparent magnitude of 11.7, with absolute magnitude of 2.2.
  • It is 2.1 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6620 with its spectral types of F6
  • In this planetary system, the extrasolar planet Kepler-340 c orbits around the star Kepler-340 every 22.8 days with its orbital distance of 0.18 AU ( 26628421.0 km)
  • (Projected orbit of Kepler-340 c around its host star Kepler-340)


  • The Star Kepler-340 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.591 AU ( 238038993.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.199 AU ( 329032096.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.351 AU ( 501372100.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.932 AU ( 737791009.1 km)
  • Radiation at Planetary Boundary of Kepler-340 c : 208806.87 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-340)



  • Kopparapu Recent Venus for Star Kepler-340 distance : 1.568 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-340 distance : 1.986 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-340 distance : 1.918 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-340 distance : 2.101 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-340 distance : 3.449 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-340 distance : 3.638 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-340)



  • Original Kopparapu Recent Venus for Star Kepler-340 distance : 1.599 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-340 distance : 2.035 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-340 distance : 2.116 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-340 distance : 3.512 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-340 distance : 3.652 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-340)



    (Position in Stellar Map of star Kepler-340 and its Exoplanet Kepler-340 c)



    (Zoomed position in Stellar Map of star Kepler-340 and its Exoplanet Kepler-340 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-340*)
    *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