Bonner Durchmusterung +5°1168

Catalog numbers:
Gliese (Gl) 231.1, Henry Draper (HD) 43587, Bonner Durchmusterung (BD) +5°1168, Hipparcos Input Catalog (HIC) 29860, Smithsonian Astrophysical Observatory (SAO) 113683, Hoffleit Bright Star (HR) 2251, Woolley (Wo) 9208, New Suspected Variable (NSV) 2896
Age: 9300 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: binary
Right Ascension and Declination: 6h17m16.2s, +5°6'0.2" (epoch 2000.0)
Distance from Sol: 63.0 light-years (19.3 parsecs)
Standard error in distance: 1.4846%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -4.73, 62.6, 5.60
Galactic (X,Y,Z) coordinates in ly: -57.0, -26.3, -5.11
Proper motion: 0.261 arcsec/yr (306.7° from north)
Radial Velocity: 9.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -17.0, 16.0, -10.9

What do all these fields mean?

Component A:
Spectral class: F9
Luminosity Class: V
Apparent visual magnitude: +5.70
Absolute visual magnitude: +4.27
Visual luminosity: 1.70 x Sol
Color indices: B-V= +0.60, U-B= +0.10, R-I= +0.22
Diameter: 1.05 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.31 A.U.s
Angular size of star in sky in CZ: 0.428939 degrees

Component B:
Catalog numbers:
Giclas (G) 106-36
Right Ascension and Declination: 6h14m32s, +5°8'5" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -3.98, 62.6, 5.64
Galactic (X,Y,Z) coordinates in ly: -57.1, -26.0, -5.75
Proper motion: 0.29 arcsec/yr (302.0° from north)
Radial Velocity: 8.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -16.5, 17.8, -14.0
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +13.42
Absolute visual magnitude: +11.99
Visual luminosity: 0.0014 x Sol
Color indices: B-V= +1.41, U-B= +1.10, R-I= +1.24
Diameter: 0.35 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.037 A.U.s
Angular size of star in sky in CZ: 4.999769 degrees

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