Bonner Durchmusterung +41°328

light-years

Catalog numbers:
     Gliese (Gl) 67, Henry Draper (HD) 10307, Bonner Durchmusterung (BD) +41°328 , Luyten Half-Second (LHS) 1284, Hipparcos Input Catalog (HIC) 7918, Smithsonian Astrophysical Observatory (SAO) 37434, Hoffleit Bright Star (HR) 483
Age: 7600 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 134% of Sol
Standard error in heavy element abundance: 10%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Points of interest:
     B. Edvardsson et al. measured a metallicity of about 110% of Sol for this star, based on an iron-to-hydrogen ratio of 95% the Solar value.  But even this lower metallicity value seems high, considering that both Edvardsson and Barry measured an age close to 8 thousand-million years.

Right Ascension and Declination: 1h41m47.174s, +42°36'48.51" (epoch 2000.0)
Distance from Sol: 41.2 light-years (12.6 parsecs)
Standard error in distance: 1.0385%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 27.4, 13.0, 27.9
Galactic (X,Y,Z) coordinates in ly: -26.7, 28.4, -13.4
Proper motion: 0.826 arcsec/yr (100.4° from north)
Radial Velocity: 3.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -38.4, -31.4, 0.61

What do all these fields mean?


NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: G1.5
Luminosity Class: V
Apparent visual magnitude: +4.96
Absolute visual magnitude: +4.45
Visual luminosity: 1.45 x Sol
Color indices: B-V= +0.62
Diameter: 1.18 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.20 A.U.s
Angular size of star in sky in CZ: 0.523888 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 11-May-2001.