Tau Piscis Austrini

light-years
Proper names: Tau Piscis Austrini, 15 Piscis Austrini
Catalog numbers:
     Gliese (Gl) 849.1, Henry Draper (HD) 210302, Cordoba Durchmusterung (CD) -33°15941, Hipparcos Input Catalog (HIC) 109422, Smithsonian Astrophysical Observatory (SAO) 213602, Hoffleit Bright Star (HR) 8447, Woolley (Wo) 9770
Arity: singular
Right Ascension and Declination: 22h10m8.777s, -32°32'54.05" (epoch 2000.0)
Distance from Sol: 61.1 light-years (18.7 parsecs)
Standard error in distance: 1.5135%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 45.7, -23.8, -32.9
Galactic (X,Y,Z) coordinates in ly: 33.6, 8.74, -50.3
Proper motion: 0.431 arcsec/yr (88.0° from north)
Radial Velocity: -14.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -39.1, -7.38, -9.66

What do all these fields mean?


Spectral class: F6
Luminosity Class: V
Apparent visual magnitude: +4.93
Absolute visual magnitude: +3.56
Visual luminosity: 3.27 x Sol
Color indices: B-V= +0.48, U-B= +0.01, R-I= +0.26
Diameter: 1.1 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.81 A.U.s
Angular size of star in sky in CZ: 0.324200 degrees

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