Zeta Tucanae

light-years
Proper names: Zeta Tucanae
Catalog numbers:
     Gliese (Gl) 17, Henry Draper (HD) 1581, Cape Photographic Durchmusterung (CPD) -65°13, Luyten Half-Second (LHS) 5, Hipparcos Input Catalog (HIC) 1599, Smithsonian Astrophysical Observatory (SAO) 248163, Fifth Fundamental Catalogue (FK5) 10, Hoffleit Bright Star (HR) 77
Heavy element abundance: 60% of Sol
Standard error in heavy element abundance: 13%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: possible spectroscopic binary
Right Ascension and Declination: 0h20m4.251s, -64°52'29.25" (epoch 2000.0)
Distance from Sol: 28.03 light-years (8.593 parsecs)
Standard error in distance: 0.5469%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 11.85, 1.041, -25.37
Galactic (X,Y,Z) coordinates in ly: 10.56, -13.52, -22.16
Proper motion: 2.072 arcsec/yr (55.7° from north)
Radial Velocity: 9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -72.75, -4.155, -43.54

What do all these fields mean?


Spectral class: F9
Luminosity Class: V
Apparent visual magnitude: +4.23
Absolute visual magnitude: +4.56
Visual luminosity: 1.312 x Sol
Color indices: B-V= +0.58
Mass: 0.98 x Sol
Diameter: 1.108 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.145 A.U.s
Orbital period in CZ: 1.23815 years
Tidal index in CZ: 0.652305
Angular size of star in sky in CZ: 0.515824 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.