Imaginary Picture of Kepler-401 d

Display orbital revolution of Kepler-401 d around the hoststar Kepler-401
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Exoplanet Name : Kepler-401 d
Alternate Name : "2MASS J19201985+5051485 d, K02714.03, KIC 12206313 d, KOI-2714 d, KOI-2714.03, WISE J192019.85+505148.4 d"
Status : Confirmed
Radius (Rjup / Re): 0.2030 (Rjup) 2.2754 (Rearth)
Mass (Mjup / Me): 0.0178 (Mjup) 5.6674 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.5045
Orbital Period(Observed/Estimated) 184.26 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0946
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.0 (K)
Blackbody T 0.3(K) 0.0 (K)
Blackbody T 0.7(K) 0.0 (K)
Tidally Locked Blackbody T 0.1(K) 0.0 (K)
Tidally Locked Blackbody T 0.3(K) 0.0 (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-401
Alternate Name : "2MASS J19201985+5051485, KIC 12206313, KOI-2714, WISE J192019.85+505148.4"
Star Distance(LY) : 3148.3
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6045 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.3
Absolute Magnitude: 2.4
Apparent Magnitude: 12.3
Right Ascension(RA) 290.0827
Declination (DEC) 50.8635
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-401+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-401%20d/
Kepler-401 d
Kepler-401 d

  • Kepler-401 d is an exoplanet orbiting the star Kepler-401, located about 3148.3 light-years (965.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-401 has apparent magnitude of 12.3, with absolute magnitude of 2.4.
  • In this planetary system, the extrasolar planet Kepler-401 d orbits around the star Kepler-401 every 184.3 days with its orbital distance of 0.00 AU ( 0.0 km)
  • (Projected orbit of Kepler-401 d around its host star Kepler-401)


  • The Star Kepler-401 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.370 AU ( 204878707.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.893 AU ( 283195915.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.885 AU ( 431527903.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.245 AU ( 635012214.2 km)
  • Radiation at Planetary Boundary of Kepler-401 d : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-401)



  • Kopparapu Recent Venus for Star Kepler-401 distance : 1.397 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-401 distance : 1.769 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-401 distance : 1.708 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-401 distance : 1.872 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-401 distance : 3.103 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-401 distance : 3.273 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-401)



  • Original Kopparapu Recent Venus for Star Kepler-401 distance : 1.406 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-401 distance : 1.816 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-401 distance : 1.861 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-401 distance : 3.158 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-401 distance : 3.284 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-401)



    (Position in Stellar Map of star Kepler-401 and its Exoplanet Kepler-401 d)



    (Zoomed position in Stellar Map of star Kepler-401 and its Exoplanet Kepler-401 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-401*)
    *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