K2-77

Display orbital revolution around the star K2-77
Imaginary Picture of Star K2-77
Star Name : K2-77
Alternate Name : "EPIC 210363145, 2MASS J03405481+1234216, WISE J034054.84+123421.0"
Star Distance (LY/pc): 464.1526 (LY) 142.3100 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.7600 (Rsun, estimated)
Stellar Mass (Msun): 0.8000 (Msun/observed) 0.8000 (Msun/estimated)
Spectral type : K
Metalicity : 0.2900
Absolute Magnitude : 6.39
Apparent Magnitude : 12.16
Right Ascension(RA) : 55.22843
Declination(DEC) : 12.57261
  • This is the K2-77 . The star K2-77 islocated about 464.2 light-years (142.3 pc) away from our Solar System.
  • The star K2-77 has apparent magnitude of 12.2, with absolute magnitude of 6.4.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4970 with its spectral types of K
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-77 b radius 0.205000 mass 1.900000 orbital distance 0.000000
    (Illustration of the K2-77's Planetary System)



    The Star K2-77 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.407 AU ( 60839338.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.562 AU ( 84095864.8 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.857 AU ( 128143487.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.261 AU ( 188568755.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-77)



    Kopparapu's Recent Venus for Star K2-77 distance : 0.441 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-77 distance : 0.558 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-77 distance : 0.539 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-77 distance : 0.591 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-77 distance : 1.012 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-77 distance : 1.068 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-77)



  • Original Kopparapu Recent Venus for Star K2-77 distance : 0.436 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-77 distance : 0.575 AU
  • Original Kopparapu Moist Greenhouse for Star K2-77 distance : 0.577 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-77 distance : 1.029 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-77 distance : 1.070 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-77)



    (Position in Stellar Map of star K2-77 )



    (Zoomed position in Stellar Map of star K2-77 (zoom level 3))

    (Synthetic Spectrum of star Kepler-889*)
    *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