Bonner Durchmusterung +5°2143

Catalog numbers:
Gliese (Gl) 339, Henry Draper (HD) 79555, Bonner Durchmusterung (BD) +5°2143, Hipparcos Input Catalog (HIC) 45383, Smithsonian Astrophysical Observatory (SAO) 117534, Vyssotsky McCormick (McC) 542, AJ 94
Arity: binary
Right Ascension and Declination: 9h14m53.69s, +4°26'34.16" (epoch 2000.0)
Distance from Sol: 60.1 light-years (18.4 parsecs)
Standard error in distance: 2.0581%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -45.0, 39.5, 4.66
Galactic (X,Y,Z) coordinates in ly: -33.7, -36.5, 33.8
Proper motion: 0.106 arcsec/yr (279.8° from north)
Radial Velocity: 16.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -16.2, -8.72, 3.24

What do all these fields mean?

Data for A and B's orbit around one other:
Combined spectrum: K5 V
Combined absolute visual magnitude: +6.64
Combined visual luminosity: 0.19 x Sol
Observed Separation: 12.9 A.U.s
Source for orbit data: Heintz
As seen from A:
B would appear as magnitude -16.37
As seen from B:
A would appear as magnitude -19.31

Component A:
Apparent visual magnitude: +8.04
Absolute visual magnitude: +6.71
Visual luminosity: 0.18 x Sol
Diameter: 0.81 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.42 A.U.s
Angular size of star in sky in CZ: 1.017936 degrees

Component B:
Apparent visual magnitude: +10.98
Absolute visual magnitude: +9.65
Visual luminosity: 0.012 x Sol
Comfort Zone (visual): 0.11 A.U.s

Data for this star system were most recently updated on 4-April-2001.