Gamma Tucanae

light-years
Proper names: Gamma Tucanae
Catalog numbers:
     Woolley (Wo) 9818, Henry Draper (HD) 219571, Cape Photographic Durchmusterung (CPD) -58°8062, Hipparcos Input Catalog (HIC) 114996, Smithsonian Astrophysical Observatory (SAO) 247814, Fifth Fundamental Catalogue (FK5) 877, Hoffleit Bright Star (HR) 8848
Arity: singular
Right Ascension and Declination: 23h17m25.767s, -58°14'8.62" (epoch 2000.0)
Distance from Sol: 71.8 light-years (22.0 parsecs)
Standard error in distance: 1.3258%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 37.2, -6.98, -61.1
Galactic (X,Y,Z) coordinates in ly: 33.1, -24.0, -59.0
Proper motion: 0.087 arcsec/yr (343.7° from north)
Radial Velocity: 18.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 9.19, 2.37, -18.2

What do all these fields mean?


Spectral class: F1
Luminosity Class: III
Apparent visual magnitude: +3.99
Absolute visual magnitude: +2.28
Visual luminosity: 10.7 x Sol
Color indices: B-V= +0.40, U-B= -0.04
Diameter: 2.18 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 3.27 A.U.s
Angular size of star in sky in CZ: 0.355047 degrees

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