Omega(2) Aquarii

Proper names: Omega(2) Aquarii, 105 Aquarii, Omega Aquarii
Catalog numbers:
Woolley (Wo) 9836, Henry Draper (HD) 222661, Bonner Durchmusterung (BD) -15°6476, Hipparcos Input Catalog (HIC) 116971, Smithsonian Astrophysical Observatory (SAO) 165842, Aitken Double Star (ADS) 16944, Fifth Fundamental Catalogue (FK5) 894, Hoffleit Bright Star (HR) 8988, S.W. Burnham (BU) 279
Arity: binary
Right Ascension and Declination: 23h42m43.349s, -14°32'41.64" (epoch 2000.0)
Distance from Sol: 154 light-years (47.3 parsecs)
Standard error in distance: 3.9492%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 149, -11.2, -38.7
Galactic (X,Y,Z) coordinates in ly: 18.5, 49.5, -145
Proper motion: 0.116 arcsec/yr (122.6° from north)
Radial Velocity: -2.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -12.9, -21.6, -6.82

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +1.10
Combined visual luminosity: 31.5 x Sol
Observed Separation: 269 A.U.s
Year of separation observation: 1958
As seen from A:
B would appear as magnitude -11.79
As seen from B:
A would appear as magnitude -18.31

Component A:
Spectral class: B9
Luminosity Class: V
Apparent visual magnitude: +4.48
Absolute visual magnitude: +1.11
Visual luminosity: 31.4 x Sol
Color indices: B-V= -0.04, U-B= -0.12
Diameter: 1.82 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 5.60 A.U.s
Angular size of star in sky in CZ: 0.172969 degrees

Component B:
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +11.00
Absolute visual magnitude: +7.63
Visual luminosity: 0.077 x Sol
Diameter: 0.62 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.28 A.U.s
Angular size of star in sky in CZ: 1.187827 degrees

Data for this star system were most recently updated on 4-April-2001.