Zeta Arae

light-years
Proper names: Zeta Arae
Catalog numbers:
     Woolley (Wo) 9581, Henry Draper (HD) 152786, Cape Photographic Durchmusterung (CPD) -55°7766, Hipparcos Input Catalog (HIC) 83081, Smithsonian Astrophysical Observatory (SAO) 244315, Fifth Fundamental Catalogue (FK5) 631, Hoffleit Bright Star (HR) 6285
Arity: singular
Right Ascension and Declination: 16h58m37.208s, -55°59'24.51" (epoch 2000.0)
Distance from Sol: 78 light-years (24 parsecs)
Standard error in distance: 26.7951%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -12, -42, -65
Galactic (X,Y,Z) coordinates in ly: 69, -35, -12
Proper motion: 0.038 arcsec/yr (201.2° from north)
Radial Velocity: -6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -7.3, -0.9, -0.3

What do all these fields mean?


Spectral class: K5
Luminosity Class: III
Apparent visual magnitude: +3.12
Absolute visual magnitude: +1.23
Visual luminosity: 28 x Sol
Color indices: B-V= +1.60, U-B= +1.97, R-I= +0.64
Diameter: 19 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 5.3 A.U.s
Angular size of star in sky in CZ: 1.956065 degrees

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