Cordoba Durchmusterung -42°249

Catalog numbers:
Gliese (Gl) 32, Henry Draper (HD) 4378, Cordoba Durchmusterung (CD) -42°249, Hipparcos Input Catalog (HIC) 3588, Smithsonian Astrophysical Observatory (SAO) 215231
Arity: binary
Right Ascension and Declination: 0h45m48.44s, -41°54'34.7" (epoch 2000.0)
Distance from Sol: 52.3 light-years (16.0 parsecs)
Standard error in distance: 2.4996%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 38.1, 7.72, -34.9
Galactic (X,Y,Z) coordinates in ly: 7.58, -10.7, -50.6
Proper motion: 0.312 arcsec/yr (104.1° from north)
Radial Velocity: -26.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -20.2, -11.7, 26.6

What do all these fields mean?

Component A:
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.41
Absolute visual magnitude: +7.39
Visual luminosity: 0.097 x Sol
Color indices: B-V= +1.17, U-B= +1.14, R-I= +0.49
Diameter: 0.69 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.31 A.U.s
Angular size of star in sky in CZ: 1.182894 degrees

Component B:
Proper motion: 0.262 arcsec/yr (114.1° from north)
Radial Velocity: -22.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -14.4, -11.8, 23.7
Spectral class: K7
Luminosity Class: V
Apparent visual magnitude: +9.06
Absolute visual magnitude: +8.04
Visual luminosity: 0.053 x Sol
Color indices: B-V= +1.27, U-B= +1.18, R-I= +0.57
Comfort Zone (visual): 0.23 A.U.s

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