What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +7.78
Combined visual luminosity: 0.068 x Sol
Period: 680 years
Semimajor Axis: 64.8 A.U.s
Eccentricity: 0.83
Periastron distance: 11.0 A.U.s
Apastron distance: 119 A.U.s
Year in which periastron occurs: 1997
Source for orbit data: W.D. Heintz
As seen from A:
At periastron, B would appear as magnitude -17.73
At apastron, B would appear as magnitude -12.57
As seen from B:
At periastron, A would appear as magnitude -17.93
At apastron, A would appear as magnitude -12.77
Component A:
Catalog numbers:
Luyten Half-Second (LHS) 256
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.70
Absolute visual magnitude: +8.43
Visual luminosity: 0.037 x Sol
Diameter: 0.67 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.19 A.U.s
Angular size of star in sky in CZ: 1.859429 degrees
Component B:
Catalog numbers:
Luyten Half-Second (LHS) 257
Proper motion: 1.407 arcsec/yr (254.1° from north)
Radial Velocity: 44.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -84.2, 6.51, -22.9
Spectral class: K6
Luminosity Class: V
Apparent visual magnitude: +8.90
Absolute visual magnitude: +8.63
Visual luminosity: 0.031 x Sol
Diameter: 0.66 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.18 A.U.s
Angular size of star in sky in CZ: 2.008402 degrees