What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +4.08
Combined visual luminosity: 2.027 x Sol
Period: 79.92 years
Semimajor Axis: 23.60 A.U.s
Eccentricity: 0.516
Periastron distance: 11.42 A.U.s
Apastron distance: 35.78 A.U.s
Year in which periastron occurs: 1955.56
Source for orbit data: W.D. Heintz
As seen from A:
At periastron, B would appear as magnitude -20.59
At apastron, B would appear as magnitude -18.11
As seen from B:
At periastron, A would appear as magnitude -21.92
At apastron, A would appear as magnitude -19.44
Data for (A-B) and Proxima's orbit around one other:
Combined absolute visual magnitude: +4.08
Combined visual luminosity: 2.027 x Sol
Period: 500000 years
Observed Separation: 17652 A.U.s
Source for orbit data: Burnham's Celestial Handbook
As seen from (A-B):
Proxima would appear as magnitude +5.15
As seen from Proxima:
(A-B) would appear as magnitude -6.26
Component A:
Catalog numbers:
Henry Draper (HD) 128620, Luyten Half-Second (LHS) 50, Hoffleit Bright Star (HR) 5459, Hipparcos Input Catalog (HIC) 71683
Proper motion: 3.689 arcsec/yr (281.1° from north)
Radial Velocity: -26.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -32.00, 4.165, 14.15
Spectral class: G2
Luminosity Class: V
Apparent visual magnitude: +0.01
Absolute visual magnitude: +4.36
Visual luminosity: 1.567 x Sol
Color indices: B-V= +0.64, U-B= +0.23, R-I= +0.22
Mass: 1.1 x Sol
Diameter: 1.227 x Sol
Source for diameter: European Southern Observatory
Comfort Zone (visual): 1.252 A.U.s
Orbital period in CZ: 1.33536 years
Tidal index in CZ: 0.560791
Angular size of star in sky in CZ: 0.522555 degrees
Component B:
Catalog numbers:
Henry Draper (HD) 128621, Luyten Half-Second (LHS) 51, Hoffleit Bright Star (HR) 5460, Hipparcos Input Catalog (HIC) 71681
Proper motion: 3.689 arcsec/yr (281.1° from north)
Radial Velocity: -18.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -26.17, -1.452, 14.00
Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +1.34
Absolute visual magnitude: +5.69
Visual luminosity: 0.460 x Sol
Color indices: B-V= +0.84, U-B= +0.64, R-I= +0.29
Mass: 0.85 x Sol
Diameter: 0.869 x Sol
Source for diameter: Lionel
Comfort Zone (visual): 0.678 A.U.s
Orbital period in CZ: 221.389 days
Tidal index in CZ: 2.72186
Angular size of star in sky in CZ: 0.682783 degrees
Component Proxima:
Proper names: Proxima Centauri, V645 Centauri, Alpha Centauri Proxima, Alpha Proxima
Catalog numbers:
Gliese (Gl) 551, Luyten Half-Second (LHS) 49, Hipparcos Input Catalog (HIC) 70890
Right Ascension and Declination: 14h29m42.91s, -62°40'47.2" (epoch 2000.0)
Distance from Sol: 4.223 light-years (1.295 parsecs)
Standard error in distance: 0.31236%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -1.539, -1.178, -3.752
Galactic (X,Y,Z) coordinates in ly: 2.946, -3.021, -0.169
Proper motion: 3.809 arcsec/yr (281.7° from north)
Radial Velocity: -16 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -24.68, -2.473, 13.67
Spectral class: M5e
Luminosity Class: V
Apparent visual magnitude: +11.05 (increasing to +10.12)
Absolute visual magnitude: +15.49 (increasing to +14.56)
Visual luminosity: 0.0000555 x Sol (increasing to 0.000131 x Sol)
Variable type: UV Ceti flare star (eruptive variable)
Color indices: B-V= +1.83, U-B= +1.43, R-I= +1.66
Mass: 0.123 x Sol
Source for mass: European Southern Observatory
Diameter: 0.145 x Sol
Source for diameter: European Southern Observatory
Comfort Zone (visual): 0.00745 A.U.s
Orbital period in CZ: 16.0689 hours
Tidal index in CZ: 297597
Angular size of star in sky in CZ: 10.397477 degrees