eps Tau

Display orbital revolution around the star eps Tau
Imaginary Picture of Star eps Tau
Star Name : eps Tau
Alternate Name : "74 Tau, HD 28305"
Star Distance (LY/pc): 146.6529 (LY) 44.9640 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 13.7000 (Rsun, estimated)
Stellar Mass (Msun): 2.7000 (Msun/observed) 2.7000 (Msun/estimated)
Spectral type : K0 III
Metalicity : 0.1700
Absolute Magnitude : 0.27
Apparent Magnitude : 3.53
Right Ascension(RA) : 67.15416
Declination(DEC) : 19.18056
  • This is the eps Tau . The star eps Tau islocated about 146.7 light-years (45.0 pc) away from our Solar System.
  • The star eps Tau has apparent magnitude of 3.5, with absolute magnitude of 0.3.
  • It is 2.7 times more massive and 13.7 times bigger compared with our Sun. The surface temperature is 4901 with its spectral types of K0 III
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet eps Tau b radius 1.049867 mass 7.340000 orbital distance 1.900000
    (Illustration of the eps Tau's Planetary System)



    The Star eps Tau 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 7.129 AU ( 1066468628.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 9.854 AU ( 1474138346.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 15.015 AU ( 2246260613.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 22.096 AU ( 3305470894.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star eps Tau)



    Kopparapu's Recent Venus for Star eps Tau distance : 7.748 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star eps Tau distance : 9.809 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star eps Tau distance : 9.474 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star eps Tau distance : 10.390 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star eps Tau distance : 17.850 AU
    Kopparapu's Outer Boundary for Early Mars for Star eps Tau distance : 18.829 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star eps Tau)



  • Original Kopparapu Recent Venus for Star eps Tau distance : 7.659 AU
  • Original Kopparapu Runaway Greenhouse for Star eps Tau distance : 10.112 AU
  • Original Kopparapu Moist Greenhouse for Star eps Tau distance : 10.134 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star eps Tau distance : 18.148 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star eps Tau distance : 18.873 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star eps Tau)



    (Position in Stellar Map of star eps Tau )



    (Zoomed position in Stellar Map of star eps Tau (zoom level 3))

    (Synthetic Spectrum of star K2-359*)
    *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