15 Sge

Display orbital revolution around the star 15 Sge
Imaginary Picture of Star 15 Sge
Star Name : 15 Sge
Alternate Name : "HR 7672, HD 190406, GJ 779"
Star Distance (LY/pc): 57.7948 (LY) 17.7200 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.9992 (Rsun, estimated)
Stellar Mass (Msun): 0.0000 (Msun/observed) 0.0000 (Msun/estimated)
Spectral type : G0V
Metalicity : 0.0000
Absolute Magnitude : 4.56
Apparent Magnitude : 5.80
Right Ascension(RA) : 301.02500
Declination(DEC) : 17.07028
  • This is the 15 Sge . The star 15 Sge islocated about 57.8 light-years (17.7 pc) away from our Solar System.
  • The star 15 Sge has apparent magnitude of 5.8, with absolute magnitude of 4.6.
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet 15 Sge b radius 0.907830 mass 61.500000 orbital distance 14.000000
    (Illustration of the 15 Sge's Planetary System)



    The Star 15 Sge 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.792 AU ( 118523320.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.095 AU ( 163830203.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.669 AU ( 249640973.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.456 AU ( 367357629.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 15 Sge)



    Kopparapu's Recent Venus for Star 15 Sge distance : 0.808 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star 15 Sge distance : 1.023 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star 15 Sge distance : 0.988 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star 15 Sge distance : 1.083 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star 15 Sge distance : 1.794 AU
    Kopparapu's Outer Boundary for Early Mars for Star 15 Sge distance : 1.893 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 15 Sge)



  • Original Kopparapu Recent Venus for Star 15 Sge distance : 0.813 AU
  • Original Kopparapu Runaway Greenhouse for Star 15 Sge distance : 1.050 AU
  • Original Kopparapu Moist Greenhouse for Star 15 Sge distance : 1.076 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 15 Sge distance : 1.826 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 15 Sge distance : 1.899 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 15 Sge)



    (Position in Stellar Map of star 15 Sge )



    (Zoomed position in Stellar Map of star 15 Sge (zoom level 3))

    (Synthetic Spectrum of star Lalande 21185*)
    *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