K2-399

Display orbital revolution around the star K2-399
Imaginary Picture of Star K2-399
Star Name : K2-399
Alternate Name : "EPIC 248472140, TOI-4838"
Star Distance (LY/pc): 1681.3048 (LY) 515.4910 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.6600 (Rsun, estimated)
Stellar Mass (Msun): 1.0100 (Msun/observed) 1.0100 (Msun/estimated)
Spectral type : G2IV
Metalicity : 0.2520
Absolute Magnitude : 3.92
Apparent Magnitude : 12.48
Right Ascension(RA) : 158.07346
Declination(DEC) : 2.23793
  • This is the K2-399 . The star K2-399 islocated about 1681.3 light-years (515.5 pc) away from our Solar System.
  • The star K2-399 has apparent magnitude of 12.5, with absolute magnitude of 3.9.
  • It is 1.0 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 5690 with its spectral types of G2IV
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-399 b radius 0.539660 mass 0.101560 orbital distance 0.016350
    (Illustration of the K2-399's Planetary System)



    The Star K2-399 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.164 AU ( 174176970.8 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.609 AU ( 240758091.6 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.452 AU ( 366862051.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.609 AU ( 539853580.5 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-399)



    Kopparapu's Recent Venus for Star K2-399 distance : 1.213 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-399 distance : 1.536 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-399 distance : 1.484 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-399 distance : 1.627 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-399 distance : 2.719 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-399 distance : 2.868 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-399)



  • Original Kopparapu Recent Venus for Star K2-399 distance : 1.213 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-399 distance : 1.579 AU
  • Original Kopparapu Moist Greenhouse for Star K2-399 distance : 1.604 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-399 distance : 2.767 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-399 distance : 2.877 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-399)



    (Position in Stellar Map of star K2-399 )



    (Zoomed position in Stellar Map of star K2-399 (zoom level 3))

    (Synthetic Spectrum of star Kepler-1169*)
    *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