Imaginary Picture of Kepler-254 c

Display orbital revolution of Kepler-254 c around the hoststar Kepler-254
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Exoplanet Name : Kepler-254 c
Alternate Name : "2MASS J19123952+4548594 c, K00934.02, KIC 9334289 c, KOI-934 c, KOI-934.02, WISE J191239.50+454859.2 c"
Status : Confirmed
Radius (Rjup / Re): 0.1920 (Rjup) 2.1521 (Rearth)
Mass (Mjup / Me): 0.0169 (Mjup) 5.3812 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1050 (AU) 0.1050 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0340
Orbital Period(Observed/Estimated) 12.41 (Days Obs.) 12.41 (Days Est.)
Surface Gravity (G Earth) 1.1618
Star Radiation at Atmospheric Boundary: 88414.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 769.6 (K)
Blackbody T 0.3(K) 722.7 (K)
Blackbody T 0.7(K) 584.8 (K)
Tidally Locked Blackbody T 0.1(K) 915.2 (K)
Tidally Locked Blackbody T 0.3(K) 859.5 (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-254
Alternate Name : "2MASS J19123952+4548594, KIC 9334289, KOI-934, WISE J191239.50+454859.2"
Star Distance(LY) : 4555.4
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5503 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.2
Absolute Magnitude: 3.9
Apparent Magnitude: 14.7
Right Ascension(RA) 288.1647
Declination (DEC) 45.8165
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-254+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-254%20c/
Kepler-254 c
Kepler-254 c

  • Kepler-254 c is an exoplanet orbiting the star Kepler-254, located about 4555.4 light-years (1396.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-254 has apparent magnitude of 14.7, with absolute magnitude of 3.9.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5503 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-254 c orbits around the star Kepler-254 every 12.4 days with its orbital distance of 0.10 AU ( 15707776.4 km)
  • (Projected orbit of Kepler-254 c around its host star Kepler-254)


  • The Star Kepler-254 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.611 AU ( 91370672.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.844 AU ( 126298146.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.286 AU ( 192450425.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.893 AU ( 283199232.4 km)
  • Radiation at Planetary Boundary of Kepler-254 c : 88414.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-254)



  • Kopparapu Recent Venus for Star Kepler-254 distance : 0.643 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-254 distance : 0.815 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-254 distance : 0.787 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-254 distance : 0.863 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-254 distance : 1.450 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-254 distance : 1.530 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-254)



  • Original Kopparapu Recent Venus for Star Kepler-254 distance : 0.641 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-254 distance : 0.838 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-254 distance : 0.848 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-254 distance : 1.475 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-254 distance : 1.534 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-254)



    (Position in Stellar Map of star Kepler-254 and its Exoplanet Kepler-254 c)



    (Zoomed position in Stellar Map of star Kepler-254 and its Exoplanet Kepler-254 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-254*)
    *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