Beta Trianguli Australis

light-years
Proper names: Beta Trianguli Australis
Catalog numbers:
     Gliese (Gl) 601, Henry Draper (HD) 141891, Cape Photographic Durchmusterung (CPD) -63°3723, Hipparcos Input Catalog (HIC) 77952, Smithsonian Astrophysical Observatory (SAO) 253346, Fifth Fundamental Catalogue (FK5) 589, Hoffleit Bright Star (HR) 5897
Arity: singular
Right Ascension and Declination: 15h55m8.547s, -63°25'50.37" (epoch 2000.0)
Distance from Sol: 40.15 light-years (12.31 parsecs)
Standard error in distance: 0.7574%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -9.306, -15.36, -35.91
Galactic (X,Y,Z) coordinates in ly: 31.39, -24.40, -5.557
Proper motion: 0.44 arcsec/yr (205.0° from north)
Radial Velocity: 0.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -15.20, -17.80, -10.56

What do all these fields mean?


Spectral class: F2
Luminosity Class: IV-V
Apparent visual magnitude: +2.81
Absolute visual magnitude: +2.36
Visual luminosity: 9.920 x Sol
Color indices: B-V= +0.29, U-B= +0.04, R-I= +0.07
Diameter: 1.984 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 3.150 A.U.s
Angular size of star in sky in CZ: 0.335884 degrees

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