What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +3.53
Combined visual luminosity: 3.37 x Sol
Observed Separation: 240 A.U.s
Source for orbit data: http://cfa-www.harvard.edu/planets/tau-Boo.html
As seen from A:
B would appear as magnitude -9.64
As seen from B:
A would appear as magnitude -16.14
Component A:
Spectral class: F7
Luminosity Class: V
Apparent visual magnitude: +4.50
Absolute visual magnitude: +3.53
Visual luminosity: 3.36 x Sol
Color indices: B-V= +0.48, U-B= +0.04, R-I= +0.15
Mass: 1.3 x Sol
Diameter: 1.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.83 A.U.s
Orbital period in CZ: 2.17549 years
Tidal index in CZ: 0.211292
Angular size of star in sky in CZ: 0.487652 degrees
Detected companions: 1
Companion b:
Mass: 3.9 x Jupiter, minimum
Period: 3.3124 days
Standard Error in period: 0.0121%
Semimajor Axis: 0.046 A.U.s
Source for orbit data: Marcy & Butler
Component B:
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +11.00
Absolute visual magnitude: +10.03
Visual luminosity: 0.0084 x Sol
Mass: 0.2 x Sol
Diameter: 0.58 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.092 A.U.s
Orbital period in CZ: 22.7253 days
Tidal index in CZ: 258.322
Angular size of star in sky in CZ: 3.367361 degrees