Tau(6) Eridani

light-years
Proper names: Tau(6) Eridani, 27 Eridani, Tau Eridani
Catalog numbers:
     Gliese (Gl) 155, Henry Draper (HD) 23754, Cordoba Durchmusterung (CD) -23°1565 , Luyten Half-Second (LHS) 1591 , Hipparcos Input Catalog (HIC) 17651, Smithsonian Astrophysical Observatory (SAO) 168827, Fifth Fundamental Catalogue (FK5) 140, Hoffleit Bright Star (HR) 1173
Age: 1700 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 135% of Sol
Source for heavy element abundance: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Arity: singular
Right Ascension and Declination: 3h46m50.889s, -23°14'58.97" (epoch 2000.0)
Distance from Sol: 58.5 light-years (17.9 parsecs)
Standard error in distance: 1.2217%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 29.5, 44.9, -23.1
Galactic (X,Y,Z) coordinates in ly: -30.0, -22.9, -44.7
Proper motion: 0.552 arcsec/yr (196.9° from north)
Radial Velocity: 6.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 35.7, -22.5, -21.5

What do all these fields mean?


Spectral class: F3
Luminosity Class: V
Apparent visual magnitude: +4.22
Absolute visual magnitude: +2.95
Visual luminosity: 5.73 x Sol
Color indices: B-V= +0.42
Diameter: 1.71 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 2.39 A.U.s
Angular size of star in sky in CZ: 0.381851 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 11-May-2001.