Qatar-4

Display orbital revolution around the star Qatar-4
Imaginary Picture of Star Qatar-4
Star Name : Qatar-4
Alternate Name : UCAC3 269-003518
Star Distance (LY/pc): 1082.8379 (LY) 332.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1150 (Rsun, estimated)
Stellar Mass (Msun): 0.9540 (Msun/observed) 0.9540 (Msun/estimated)
Spectral type : K0
Metalicity : 0.1660
Absolute Magnitude : 14.39
Apparent Magnitude : 22.00
Right Ascension(RA) : 4.85833
Declination(DEC) : 44.02750
  • This is the Qatar-4 . The star Qatar-4 islocated about 1082.8 light-years (332.0 pc) away from our Solar System.
  • The star Qatar-4 has apparent magnitude of 22.0, with absolute magnitude of 14.4.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5219 with its spectral types of K0
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet Qatar-4 b radius 1.552000 mass 5.850000 orbital distance 0.028610
    (Illustration of the Qatar-4's Planetary System)



    The Star Qatar-4 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.658 AU ( 98425487.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.909 AU ( 136049745.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.386 AU ( 207309703.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.039 AU ( 305065310.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Qatar-4)



    Kopparapu's Recent Venus for Star Qatar-4 distance : 0.704 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Qatar-4 distance : 0.891 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Qatar-4 distance : 0.861 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Qatar-4 distance : 0.944 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Qatar-4 distance : 1.602 AU
    Kopparapu's Outer Boundary for Early Mars for Star Qatar-4 distance : 1.690 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Qatar-4)



  • Original Kopparapu Recent Venus for Star Qatar-4 distance : 0.698 AU
  • Original Kopparapu Runaway Greenhouse for Star Qatar-4 distance : 0.918 AU
  • Original Kopparapu Moist Greenhouse for Star Qatar-4 distance : 0.924 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Qatar-4 distance : 1.629 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Qatar-4 distance : 1.694 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Qatar-4)



    (Position in Stellar Map of star Qatar-4 )



    (Zoomed position in Stellar Map of star Qatar-4 (zoom level 3))

    (Synthetic Spectrum of star Kepler-1537*)
    *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