tau Boo A

Display orbital revolution around the star tau Boo A
Imaginary Picture of Star tau Boo A
Star Name : tau Boo A
Alternate Name : tau Boo
Star Distance (LY/pc): 50.9380 (LY) 15.6177 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.3310 (Rsun, estimated)
Stellar Mass (Msun): 1.3000 (Msun/observed) 1.3000 (Msun/estimated)
Spectral type : F7 V
Metalicity : 0.2800
Absolute Magnitude : 3.53
Apparent Magnitude : 4.50
Right Ascension(RA) : 206.81560
Declination(DEC) : 17.45611
  • This is the tau Boo A . The star tau Boo A islocated about 50.9 light-years (15.6 pc) away from our Solar System.
  • The star tau Boo A has apparent magnitude of 4.5, with absolute magnitude of 3.5.
  • It is 1.3 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6309 with its spectral types of F7 V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet tau Boo A b radius 1.060000 mass 5.840000 orbital distance 0.046000
    (Illustration of the tau Boo A's Planetary System)



    The Star tau Boo A 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.148 AU ( 171694831.9 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.586 AU ( 237327126.8 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.417 AU ( 361634020.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.557 AU ( 532160304.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star tau Boo A)



    Kopparapu's Recent Venus for Star tau Boo A distance : 1.152 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star tau Boo A distance : 1.459 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star tau Boo A distance : 1.409 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star tau Boo A distance : 1.543 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star tau Boo A distance : 2.546 AU
    Kopparapu's Outer Boundary for Early Mars for Star tau Boo A distance : 2.685 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star tau Boo A)



  • Original Kopparapu Recent Venus for Star tau Boo A distance : 1.166 AU
  • Original Kopparapu Runaway Greenhouse for Star tau Boo A distance : 1.496 AU
  • Original Kopparapu Moist Greenhouse for Star tau Boo A distance : 1.543 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star tau Boo A distance : 2.592 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star tau Boo A distance : 2.695 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star tau Boo A)



    (Position in Stellar Map of star tau Boo A )



    (Zoomed position in Stellar Map of star tau Boo A (zoom level 3))

    (Synthetic Spectrum of star K2-127*)
    *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