What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +3.36
Combined visual luminosity: 3.93 x Sol
Observed Separation: 538 A.U.s
Year of separation observation: 1832
As seen from A:
B would appear as magnitude -10.95
As seen from B:
A would appear as magnitude -14.51
Data for B and
Combined absolute visual magnitude: +6.96
Combined visual luminosity: 0.14 x Sol
Observed Separation: 542 A.U.s
Year of separation observation: 1953
As seen from
B would appear as magnitude -10.94
Component A:
Catalog numbers:
Henry Draper (HD) 187013, Bonner Durchmusterung (BD) +33°3587
Spectral class: F5
Luminosity Class: IV-V
Apparent visual magnitude: +5.00
Absolute visual magnitude: +3.40
Visual luminosity: 3.79 x Sol
Color indices: B-V= +0.47, U-B= +0.00
Diameter: 1.10 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.95 A.U.s
Angular size of star in sky in CZ: 0.301433 degrees
Component B:
Catalog numbers:
Henry Draper Extension (HDE) 225732, Bonner Durchmusterung (BD) +33°3589
Right Ascension and Declination: 19h44m34s, +33°36'48" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: 25.0, -50.9, 37.7
Galactic (X,Y,Z) coordinates in ly: 24.5, 63.2, 5.26
Proper motion: 0.443 arcsec/yr (177.6° from north)
Radial Velocity: 4.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 36.7, -7.45, -23.2
Spectral class: K6
Luminosity Class: V
Apparent visual magnitude: +8.56
Absolute visual magnitude: +6.96
Visual luminosity: 0.14 x Sol
Color indices: B-V= +1.04, U-B= +0.95, R-I= +0.38
Diameter: 0.76 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.38 A.U.s
Angular size of star in sky in CZ: 1.072383 degrees