Imaginary Picture of eps Tau b
/
Exoplanet Name : eps Tau b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 7.3400 (Mjup) 2333.6649 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.9000 (AU) 1.9000 (AU Est.)
Eccentricity : 0.1510
Orbital Period(Yrs) 1.6287
Orbital Period(Observed/Estimated) 594.90 (Days Obs.) 582.16 (Days Est.)
Star Radiation at Atmospheric Boundary: 36785.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 618.1 (K)
Blackbody T 0.3(K) 580.5 (K)
Blackbody T 0.7(K) 469.7 (K)
Tidally Locked Blackbody T 0.1(K) 735.1 (K)
Tidally Locked Blackbody T 0.3(K) 690.3 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : eps Tau
Alternate Name : "74 Tau, HD 28305"
Star Distance(LY) : 146.7
Stellar Radius(Rsun) : 13.7 (Rsun Measured)
Stellar Mass(Msun) : 2.7 (Msun Measured) 2.6 (Msun Estimated)
Star Age : 0.6 (GY)
Temperature : 4901 (K)
Spectral type : K0 III
Metalicity : 0.2
Absolute Magnitude: 0.3
Apparent Magnitude: 3.5
Right Ascension(RA) 67.1542
Declination (DEC) 19.1806
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by Bunei Sato et al.
Discovery Paper - Authors "Sato,un'ei; Izumiura,ideyuki; Toyota,ri; Kambe,iji; Takeda,oichi; Masuda,eiji; Omiya,asashi; Murata,aisuke; Itoh,oichi; Ando,iroyasu; Yoshida,ichitoshi; Ikoma,asahiro; Kokubo,iichiro; Ida,higeru"
Discovery Paper - Title A Planetary Companion to the Hyades Giant _ Tauri
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=eps+Tau+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/eps%20Tau%20b/
eps Tau b
eps Tau b

  • eps Tau b is an exoplanet orbiting the star eps Tau, located about 146.7 light-years (45.0 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host 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
  • In this planetary system, the extrasolar planet eps Tau b orbits around the star eps Tau every 594.9 days with its orbital distance of 1.90 AU ( 284235954.3 km)
  • (Projected orbit of eps Tau b around its host star eps Tau)


  • 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)
  • Radiation at Planetary Boundary of eps Tau b : 36785.58 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star eps Tau)



  • Kopparapu Recent Venus for Star eps Tau distance : 7.748 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star eps Tau distance : 9.809 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star eps Tau distance : 9.474 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star eps Tau distance : 10.399 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star eps Tau distance : 17.850 AU
  • Kopparapu 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 and its Exoplanet eps Tau b)



    (Zoomed position in Stellar Map of star eps Tau and its Exoplanet eps Tau b (zoom level 3))