Imaginary Picture of Kepler-411 c
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Exoplanet Name : Kepler-411 c
Alternate Name : KOI-1781 c
Radius (Rjup / Re): 0.2920 (Rjup) 3.2730 (Rearth)
Mass (Mjup / Me): 0.0250 (Mjup) 7.9472 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0725 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0214
Orbital Period(Observed/Estimated) 7.83 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 89003.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 770.9 (K)
Blackbody T 0.3(K) 723.9 (K)
Blackbody T 0.7(K) 585.8 (K)
Tidally Locked Blackbody T 0.1(K) 916.8 (K)
Tidally Locked Blackbody T 0.3(K) 860.9 (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 : KOI-1781
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4974 (K)
Spectral type : K2
Metalicity : 0.2
Absolute Magnitude: 25.0
Apparent Magnitude: 12.5
Right Ascension(RA) 287.6056
Declination (DEC) 49.5233
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha2"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 428 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-411%20c/
Kepler-411 c
Kepler-411 c

  • Kepler-411 c is an exoplanet orbiting the star KOI-1781. Its discovery was publicly announced on 2016.
  • The host star KOI-1781 has apparent magnitude of 12.5, with absolute magnitude of 25.0.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4974 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-411 c orbits around the star KOI-1781 every 7.8 days with its orbital distance of 0.07 AU ( 10853325.2 km)
  • (Projected orbit of Kepler-411 c around its host star KOI-1781)


  • The Star KOI-1781 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.423 AU ( 63342728.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.585 AU ( 87556204.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.892 AU ( 133416278.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.312 AU ( 196327898.8 km)
  • Radiation at Planetary Boundary of Kepler-411 c : 89003.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KOI-1781)



  • Kopparapu Recent Venus for Star KOI-1781 distance : 0.459 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KOI-1781 distance : 0.581 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KOI-1781 distance : 0.561 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KOI-1781 distance : 0.615 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-1781 distance : 1.054 AU
  • Kopparapu Outer Boundary for Early Mars for Star KOI-1781 distance : 1.111 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KOI-1781)



  • Original Kopparapu Recent Venus for Star KOI-1781 distance : 0.454 AU
  • Original Kopparapu Runaway Greenhouse for Star KOI-1781 distance : 0.598 AU
  • Original Kopparapu Moist Greenhouse for Star KOI-1781 distance : 0.600 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-1781 distance : 1.071 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KOI-1781 distance : 1.114 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KOI-1781)



    (Position in Stellar Map of star KOI-1781 and its Exoplanet Kepler-411 c)



    (Zoomed position in Stellar Map of star KOI-1781 and its Exoplanet Kepler-411 c (zoom level 3))