What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.96
Combined visual luminosity: 0.1 x Sol
Period: 72 years
Semimajor Axis: 14 A.U.s
Eccentricity: 0.5
Periastron distance: 7.1 A.U.s
Apastron distance: 21 A.U.s
Year in which periastron occurs: 1930.37
Source for orbit data: P. Baize
As seen from A:
At periastron, B would appear as magnitude -19.11
At apastron, B would appear as magnitude -16.73
As seen from B:
At periastron, A would appear as magnitude -19.93
At apastron, A would appear as magnitude -17.55
Data for (A-B) and C's orbit around one other:
Combined absolute visual magnitude: +6.40
Combined visual luminosity: 0.2 x Sol
Period: 390.6 years
Semimajor Axis: 60 A.U.s
Eccentricity: 0.27
Periastron distance: 44 A.U.s
Apastron distance: 76 A.U.s
Year in which periastron occurs: 1716
Source for orbit data: P. Baize
As seen from (A-B):
At periastron, C would appear as magnitude -15.97
At apastron, C would appear as magnitude -14.77
As seen from C:
At periastron, (A-B) would appear as magnitude -16.41
At apastron, (A-B) would appear as magnitude -15.21
Data for ((A-B)-C) and D's orbit around one other:
Combined absolute visual magnitude: +6.40
Combined visual luminosity: 0.2 x Sol
Observed Separation: 180 A.U.s
Year of separation observation: 1960
As seen from ((A-B)-C):
D would appear as magnitude -8.39
As seen from D:
((A-B)-C) would appear as magnitude -13.89
Component A:
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.28
Absolute visual magnitude: +7.38
Visual luminosity: 0.10 x Sol
Diameter: 0.73 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.3 A.U.s
Angular size of star in sky in CZ: 1.246550 degrees
Component B:
Spectral class: K
Luminosity Class: V
Apparent visual magnitude: +9.10
Absolute visual magnitude: +8.20
Visual luminosity: 0.05 x Sol
Diameter: 0.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.2 A.U.s
Angular size of star in sky in CZ: 1.693962 degrees
Component C:
Proper motion: 0.56 arcsec/yr (314.4° from north)
Radial Velocity: 105 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -79, -55, -58
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.30
Absolute visual magnitude: +7.40
Visual luminosity: 0.10 x Sol
Diameter: 0.76 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.3 A.U.s
Angular size of star in sky in CZ: 1.309787 degrees
Component D:
Apparent visual magnitude: +12.80
Absolute visual magnitude: +11.90
Visual luminosity: 0.002 x Sol
Comfort Zone (visual): 0.04 A.U.s