Imaginary Picture of Kepler-404 c

Display orbital revolution of Kepler-404 c around the hoststar Kepler-404
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Exoplanet Name : Kepler-404 c
Alternate Name : "2MASS J19053567+4520367 c, K02768.02, KIC 9008737 c, KOI-2768 c, KOI-2768.02, WISE J190535.65+452036.7 c"
Status : Confirmed
Radius (Rjup / Re): 0.1530 (Rjup) 1.7150 (Rearth)
Mass (Mjup / Me): 0.0137 (Mjup) 4.3569 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1180 (AU) 0.1180 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0404
Orbital Period(Observed/Estimated) 14.75 (Days Obs.) 13.43 (Days Est.)
Surface Gravity (G Earth) 1.4813
Star Radiation at Atmospheric Boundary: 43670.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 645.2 (K)
Blackbody T 0.3(K) 605.9 (K)
Blackbody T 0.7(K) 490.2 (K)
Tidally Locked Blackbody T 0.1(K) 767.3 (K)
Tidally Locked Blackbody T 0.3(K) 720.5 (K)
Size Class: super-Earth-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-404
Alternate Name : "2MASS J19053567+4520367, KIC 9008737, KOI-2768, WISE J190535.65+452036.7"
Star Distance(LY) : 2649.8
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5326 (K)
Spectral type : G5
UV portion[%]: 7.5
Visible portion[%]: 44.2
IR portion[%]: 48.4
Metalicity : -0.0
Absolute Magnitude: 4.4
Apparent Magnitude: 13.9
Right Ascension(RA) 286.3986
Declination (DEC) 45.3435
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-404+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-404%20c/
Kepler-404 c
Kepler-404 c

  • Kepler-404 c is an exoplanet orbiting the star Kepler-404, located about 2649.8 light-years (812.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-404 has apparent magnitude of 13.9, with absolute magnitude of 4.4.
  • It is 1.2 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5326 with its spectral types of G5
  • In this planetary system, the extrasolar planet Kepler-404 c orbits around the star Kepler-404 every 14.8 days with its orbital distance of 0.12 AU ( 17652548.7 km)
  • (Projected orbit of Kepler-404 c around its host star Kepler-404)


  • The Star Kepler-404 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.482 AU ( 72165577.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.667 AU ( 99751687.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.016 AU ( 151999497.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.495 AU ( 223673918.6 km)
  • Radiation at Planetary Boundary of Kepler-404 c : 43670.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-404)



  • Kopparapu Recent Venus for Star Kepler-404 distance : 0.513 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-404 distance : 0.650 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-404 distance : 0.628 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-404 distance : 0.688 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-404 distance : 1.164 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-404 distance : 1.227 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-404)



  • Original Kopparapu Recent Venus for Star Kepler-404 distance : 0.510 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-404 distance : 0.669 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-404 distance : 0.675 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-404 distance : 1.183 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-404 distance : 1.231 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-404)



    (Position in Stellar Map of star Kepler-404 and its Exoplanet Kepler-404 c)



    (Zoomed position in Stellar Map of star Kepler-404 and its Exoplanet Kepler-404 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-404*)
    *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