Bonner Durchmusterung -69°177

Catalog numbers:
Gliese (Gl) 127.1, Bonner Durchmusterung (BD) -69°177
Arity: binary
Right Ascension and Declination: 3h10m4s, -68°47'12" (epoch 1950.0)
Distance from Sol: 38 light-years (12 parsecs)
Standard error in distance: 10.7256%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 9.4, 10, -36
Galactic (X,Y,Z) coordinates in ly: 7.7, -27, -27
Proper motion: 0.08 arcsec/yr (130.0° from north)
Source for proper motion: Gliese

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +11.00
Combined visual luminosity: 0.003 x Sol
Observed Separation: 94 A.U.s
As seen from A:
B would appear as magnitude -7.33
As seen from B:
A would appear as magnitude -10.66

Component A:
Catalog numbers:
Eggen/Greenstein white dwarf (EG) 21, Luyten Blue star (LB) 3303
Spectral class: DA3
Luminosity Class: wd
Apparent visual magnitude: +11.40
Absolute visual magnitude: +11.04
Visual luminosity: 0.003 x Sol
Color indices: B-V= +0.05, U-B= -0.55
Comfort Zone (visual): 0.06 A.U.s

Component B:
Apparent visual magnitude: +14.73
Absolute visual magnitude: +14.37
Visual luminosity: 0.0002 x Sol
Color indices: B-V= +0.62
Comfort Zone (visual): 0.01 A.U.s

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