What do all these fields mean?
Data for B and C's orbit around one other:
Combined absolute visual magnitude: +10.18
Combined visual luminosity: 0.00739 x Sol
Period: 43.2 years
Semimajor Axis: 11.42 A.U.s
Eccentricity: 0.178
Periastron distance: 9.390 A.U.s
Apastron distance: 13.46 A.U.s
Year in which periastron occurs: 1965.4
Source for orbit data: P. Couteau
As seen from B:
At periastron, C would appear as magnitude -15.53
At apastron, C would appear as magnitude -14.75
As seen from C:
At periastron, B would appear as magnitude -15.98
At apastron, B would appear as magnitude -15.20
Data for A and (B-C)'s orbit around one other:
Combined absolute visual magnitude: +3.79
Combined visual luminosity: 2.665 x Sol
Observed Separation: 251.2 A.U.s
Year of separation observation: 1831
As seen from A:
(B-C) would appear as magnitude -9.39
As seen from (B-C):
A would appear as magnitude -15.78
Data for A and (B-C)'s orbit, take 2:
Observed Separation: 285.6 A.U.s
Year of separation observation: 1955
As seen from A:
(B-C) would appear as magnitude -9.12
As seen from (B-C):
A would appear as magnitude -15.50
Component A:
Catalog numbers:
Luyten Half-Second (LHS) 3326
Spectral class: G5
Luminosity Class: IV
Apparent visual magnitude: +3.41
Absolute visual magnitude: +3.79
Visual luminosity: 2.658 x Sol
Color indices: B-V= +0.75, U-B= +0.39, R-I= +0.24
Diameter: 1.444 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.630 A.U.s
Angular size of star in sky in CZ: 0.472316 degrees
Component B:
Catalog numbers:
Luyten Half-Second (LHS) 3325
Right Ascension and Declination: 17h44m28s, +27°44'42" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -1.642, -24.19, 12.75
Galactic (X,Y,Z) coordinates in ly: 15.06, 19.58, 11.85
Proper motion: 0.827 arcsec/yr (204.2° from north)
Radial Velocity: -13.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 17.56, -30.96, -3.284
Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +10.35
Absolute visual magnitude: +10.73
Visual luminosity: 0.00445 x Sol
Diameter: 0.48 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.0667 A.U.s
Angular size of star in sky in CZ: 3.835705 degrees
Component C:
Catalog numbers:
Luyten Half-Second (LHS) 3325
Right Ascension and Declination: 17h44m28s, +27°44'42" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -1.642, -24.19, 12.75
Galactic (X,Y,Z) coordinates in ly: 15.06, 19.58, 11.85
Proper motion: 0.827 arcsec/yr (204.2° from north)
Radial Velocity: -16.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 16.02, -32.96, -4.495
Spectral class: M4
Luminosity Class: V
Apparent visual magnitude: +10.80
Absolute visual magnitude: +11.18
Visual luminosity: 0.00294 x Sol
Diameter: 0.4 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.0542 A.U.s
Angular size of star in sky in CZ: 3.932497 degrees