SAX J1808.4-3658

Display orbital revolution around the star SAX J1808.4-3658
Imaginary Picture of Star SAX J1808.4-3658
Star Name : SAX J1808.4-3658
Alternate Name : "*V4580 Sgr, SWIFT J1808.5-3655, XTE J1808-369"
Star Distance (LY/pc): 11415.4600 (LY) 3500.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.2502 (Rsun, estimated)
Stellar Mass (Msun): 1.4000 (Msun/observed) 1.4000 (Msun/estimated)
Spectral type : PSR
Metalicity : 0.0000
Absolute Magnitude : 3.79
Apparent Magnitude : 16.51
Right Ascension(RA) : 272.11475
Declination(DEC) : -36.97897
  • This is the SAX J1808.4-3658 . The star SAX J1808.4-3658 islocated about 11415.5 light-years (3500.0 pc) away from our Solar System.
  • The star SAX J1808.4-3658 has apparent magnitude of 16.5, with absolute magnitude of 3.8.
  • It is 1.4 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of PSR
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet SAX J1808.4-3658 b radius 1.260000 mass 52.350000 orbital distance 0.004240
    (Illustration of the SAX J1808.4-3658's Planetary System)



    The Star SAX J1808.4-3658 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.819 AU ( 122567832.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.133 AU ( 169420775.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.726 AU ( 258159768.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.539 AU ( 379893409.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star SAX J1808.4-3658)



    Kopparapu's Recent Venus for Star SAX J1808.4-3658 distance : 0.762 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star SAX J1808.4-3658 distance : 0.965 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star SAX J1808.4-3658 distance : 0.932 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star SAX J1808.4-3658 distance : 1.022 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star SAX J1808.4-3658 distance : 1.718 AU
    Kopparapu's Outer Boundary for Early Mars for Star SAX J1808.4-3658 distance : 1.812 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star SAX J1808.4-3658)



  • Original Kopparapu Recent Venus for Star SAX J1808.4-3658 distance : 0.759 AU
  • Original Kopparapu Runaway Greenhouse for Star SAX J1808.4-3658 distance : 0.992 AU
  • Original Kopparapu Moist Greenhouse for Star SAX J1808.4-3658 distance : 1.004 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star SAX J1808.4-3658 distance : 1.747 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star SAX J1808.4-3658 distance : 1.817 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star SAX J1808.4-3658)



    (Position in Stellar Map of star SAX J1808.4-3658 )



    (Zoomed position in Stellar Map of star SAX J1808.4-3658 (zoom level 3))

    (Synthetic Spectrum of star Kepler-1553*)
    *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