HAT-P-4

Display orbital revolution around the star HAT-P-4
Imaginary Picture of Star HAT-P-4
Star Name : HAT-P-4
Alternate Name :
Star Distance (LY/pc): 1011.0836 (LY) 310.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.5900 (Rsun, estimated)
Stellar Mass (Msun): 1.2600 (Msun/observed) 1.2600 (Msun/estimated)
Spectral type : F
Metalicity : 0.2000
Absolute Magnitude : 3.74
Apparent Magnitude : 11.20
Right Ascension(RA) : 229.99136
Declination(DEC) : 36.22972
  • This is the HAT-P-4 . The star HAT-P-4 islocated about 1011.1 light-years (310.0 pc) away from our Solar System.
  • The star HAT-P-4 has apparent magnitude of 11.2, with absolute magnitude of 3.7.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5890 with its spectral types of F
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HAT-P-4 b radius 1.270000 mass 0.680000 orbital distance 0.044600
    (Illustration of the HAT-P-4's Planetary System)



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

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.195 AU ( 178766372.0 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.652 AU ( 247101843.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.517 AU ( 376528525.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.704 AU ( 554078220.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-4)



    Kopparapu's Recent Venus for Star HAT-P-4 distance : 1.230 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HAT-P-4 distance : 1.558 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-4 distance : 1.505 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HAT-P-4 distance : 1.649 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HAT-P-4 distance : 2.743 AU
    Kopparapu's Outer Boundary for Early Mars for Star HAT-P-4 distance : 2.893 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-4)



  • Original Kopparapu Recent Venus for Star HAT-P-4 distance : 1.235 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-4 distance : 1.600 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-4 distance : 1.634 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-4 distance : 2.792 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-4 distance : 2.903 AU

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



    (Position in Stellar Map of star HAT-P-4 )



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

    (Synthetic Spectrum of star GJ 676 A*)
    *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