Omicron Aquilae

light-years
Proper names: Omicron Aquilae, 54 Aquilae
Catalog numbers:
     Gliese (Gl) 768.1, Henry Draper (HD) 187691, Bonner Durchmusterung (BD) +10°4073, Hipparcos Input Catalog (HIC) 97675, Smithsonian Astrophysical Observatory (SAO) 105338, Aitken Double Star (ADS) 13012, Hoffleit Bright Star (HR) 7560, Jonckheere (J) 124, Woolley (Wo) 9671
Age: 4300 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 133% of Sol
Standard error in heavy element abundance: 2%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: binary
Right Ascension and Declination: 19h51m1.61s, +10°24'57.2" (epoch 2000.0)
Distance from Sol: 63.2 light-years (19.4 parsecs)
Standard error in distance: 1.4712%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 29.0, -55.0, 11.4
Galactic (X,Y,Z) coordinates in ly: 40.6, 47.6, -9.50
Proper motion: 0.274 arcsec/yr (120.0° from north)
Radial Velocity: -0.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -2.62, -3.01, -24.9

What do all these fields mean?


Component A:
Spectral class: F8
Luminosity Class: V
Apparent visual magnitude: +5.10
Absolute visual magnitude: +3.66
Visual luminosity: 2.99 x Sol
Color indices: B-V= +0.55, U-B= +0.07
Diameter: 1.1 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.73 A.U.s
Angular size of star in sky in CZ: 0.339309 degrees


Component C:
Proper motion: 0.274 arcsec/yr (120.0° from north)
Radial Velocity: -1.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.26, -3.76, -24.7
Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +13.10
Absolute visual magnitude: +11.66
Visual luminosity: 0.0019 x Sol
Color indices: R-I= +1.18
Diameter: 0.38 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.043 A.U.s
Angular size of star in sky in CZ: 4.667296 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.