Bonner Durchmusterung -4°2490

light-years

Catalog numbers:
     Gliese (Gl) 327, Henry Draper (HD) 76151, Bonner Durchmusterung (BD) -4°2490, Hipparcos Input Catalog (HIC) 43726, Smithsonian Astrophysical Observatory (SAO) 136389, Hoffleit Bright Star (HR) 3538
Age: 8900 million years — awfully old for such a high heavy element abundance
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 210% of Sol
Source for heavy element abundance: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Arity: singular
Right Ascension and Declination: 8h54m17.966s, -5°26'4.33" (epoch 2000.0)
Distance from Sol: 55.8 light-years (17.1 parsecs)
Standard error in distance: 1.482%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -38.3, 40.2, -5.28
Galactic (X,Y,Z) coordinates in ly: -30.0, -40.9, 23.2
Proper motion: 0.414 arcsec/yr (273.6° from north)
Radial Velocity: 31.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -40.0, -20.3, -11.1

What do all these fields mean?


Spectral class: G3
Luminosity Class: V
Apparent visual magnitude: +6.00
Absolute visual magnitude: +4.84
Visual luminosity: 1.01 x Sol
Color indices: B-V= +0.67, U-B= +0.21, R-I= +0.21
Diameter: 0.88 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.01 A.U.s
Angular size of star in sky in CZ: 0.466075 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.