Imaginary Picture of Kepler-406 c

Display orbital revolution of Kepler-406 c around the hoststar Kepler-406
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Exoplanet Name : Kepler-406 c
Alternate Name : "2MASS J19272353+4458056 c, K00321.02, KIC 8753657 c, KOI-321 c, KOI-321.02, WISE J192723.55+445805.7 c"
Status : Confirmed
Radius (Rjup / Re): 0.0760 (Rjup) 0.8519 (Rearth)
Mass (Mjup / Me): 0.0090 (Mjup) 2.8614 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0556 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0127
Orbital Period(Observed/Estimated) 4.62 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 3.9430
Star Radiation at Atmospheric Boundary: 471700.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1169.7 (K)
Blackbody T 0.3(K) 1098.4 (K)
Blackbody T 0.7(K) 888.7 (K)
Tidally Locked Blackbody T 0.1(K) 1391.0 (K)
Tidally Locked Blackbody T 0.3(K) 1306.3 (K)
Size Class: Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-406
Alternate Name : "KIC 8753657, KOI-321, 2MASS J19272353+4458056, WISE J192723.55+445805.7"
Star Distance(LY) : 1187.0
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 5.8 (GY)
Temperature : 5656 (K)
Spectral type : G7
UV portion[%]: 7.0
Visible portion[%]: 43.5
IR portion[%]: 49.5
Metalicity : 0.2
Absolute Magnitude: 4.7
Apparent Magnitude: 12.5
Right Ascension(RA) 291.8480
Declination (DEC) 44.9682
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard et al. The Astrophysical Journal, Supplement Series 210:20(70pp) 2014 February, doi:10.1088/0067-0049/210/2/20"
Discovery Paper - Title "Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-406%20c/
Kepler-406 c
Kepler-406 c

  • Kepler-406 c is an exoplanet orbiting the star Kepler-406, located about 1187.0 light-years (363.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-406 has apparent magnitude of 12.5, with absolute magnitude of 4.7.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5656 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-406 c orbits around the star Kepler-406 every 4.6 days with its orbital distance of 0.06 AU ( 8310538.3 km)
  • (Projected orbit of Kepler-406 c around its host star Kepler-406)


  • The Star Kepler-406 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.746 AU ( 111658712.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.032 AU ( 154341521.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.572 AU ( 235182322.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.313 AU ( 346081090.2 km)
  • Radiation at Planetary Boundary of Kepler-406 c : 471700.49 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-406)



  • Kopparapu Recent Venus for Star Kepler-406 distance : 0.779 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-406 distance : 0.987 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-406 distance : 0.953 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-406 distance : 1.045 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-406 distance : 1.748 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-406 distance : 1.844 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-406)



  • Original Kopparapu Recent Venus for Star Kepler-406 distance : 0.778 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-406 distance : 1.014 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-406 distance : 1.030 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-406 distance : 1.779 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-406 distance : 1.850 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-406)



    (Position in Stellar Map of star Kepler-406 and its Exoplanet Kepler-406 c)



    (Zoomed position in Stellar Map of star Kepler-406 and its Exoplanet Kepler-406 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-406*)
    *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