Kepler-261
Imaginary Picture of Star Kepler-261
Star Name : Kepler-261
Alternate Name :
Star Distance (LY/pc): 0.0000 (LY) 0.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.7900 (Rsun, estimated)
Stellar Mass (Msun): 0.8700 (Msun/observed) 0.8700 (Msun/estimated)
Spectral type : K1
Metalicity : 0.1400
Absolute Magnitude : 25.00
Apparent Magnitude : 12.13
Right Ascension(RA) : 291.36478
Declination(DEC) : 37.60918
  • The star Kepler-261 has apparent magnitude of 12.1, with absolute magnitude of 25.0.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5098 with its spectral types of K1
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet Kepler-261 b radius 0.194000 mass 0.017089 orbital distance 0.088000
  • Name of the 2 Planet Kepler-261 c radius 0.178000 mass 0.015775 orbital distance 0.156000
    (Illustration of the Kepler-261's Planetary System)



    The Star Kepler-261 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.445 AU ( 66540317.1 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.615 AU ( 91976107.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.937 AU ( 140151233.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.379 AU ( 206238679.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-261)



    Kopparapu's Recent Venus for Star Kepler-261 distance : 0.479 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-261 distance : 0.606 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-261 distance : 0.586 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-261 distance : 0.642 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-261 distance : 1.095 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-261 distance : 1.155 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-261)



  • Original Kopparapu Recent Venus for Star Kepler-261 distance : 0.474 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-261 distance : 0.625 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-261 distance : 0.628 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-261 distance : 1.113 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-261 distance : 1.158 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-261)



    (Position in Stellar Map of star Kepler-261 )



    (Zoomed position in Stellar Map of star Kepler-261 (zoom level 3))