Woolley 9511

light-years

Catalog numbers:
     Gliese (Gl) 579.2, Woolley (Wo) 9511
Heavy element abundance: 3% of Sol
Standard error in heavy element abundance: 0%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: binary
Right Ascension and Declination: 15h10m13.03s, -16°22'44.2" (epoch 2000.0)
Distance from Sol: 95.5 light-years (29.3 parsecs)
Standard error in distance: 3.831%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -61.9, -67.6, -26.9
Galactic (X,Y,Z) coordinates in ly: 76.2, -20.1, 54.0
Proper motion: 3.674 arcsec/yr (196.1° from north)
Radial Velocity: 294.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 291, -506, -77.6

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.15
Combined visual luminosity: 0.30 x Sol
Observed Separation: 8846 A.U.s
Year of separation observation: 2000
As seen from A:
     B would appear as magnitude -4.72
As seen from B:
     A would appear as magnitude -5.11


Component A:
Catalog numbers:
     Henry Draper (HD) 134439, Bonner Durchmusterung (BD) -15°4042, Luyten Half-Second (LHS) 53, Hipparcos Input Catalog (HIC) 74235, Smithsonian Astrophysical Observatory (SAO) 159067
Spectral class: K0
Luminosity Class: VI
Apparent visual magnitude: +9.07
Absolute visual magnitude: +6.73
Visual luminosity: 0.18 x Sol
Color indices: B-V= +0.77, U-B= +0.17, R-I= +0.30
Diameter: 0.46 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.42 A.U.s
Angular size of star in sky in CZ: 0.583522 degrees


Component B:
Catalog numbers:
     Henry Draper (HD) 134440, Bonner Durchmusterung (BD) -15°4041, Luyten Half-Second (LHS) 52, Hipparcos Input Catalog (HIC) 74234, Smithsonian Astrophysical Observatory (SAO) 159066, New Suspected Variable (NSV) 6967
Right Ascension and Declination: 15h10m12.98s, -16°27'46.2" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -61.8, -67.6, -27.1
Galactic (X,Y,Z) coordinates in ly: 76.2, -20.2, 53.9
Proper motion: 3.677 arcsec/yr (196.0° from north)
Radial Velocity: 308 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 302, -509, -71.3
Spectral class: K2
Luminosity Class: VI
Apparent visual magnitude: +9.45
Absolute visual magnitude: +7.12
Visual luminosity: 0.12 x Sol
Color indices: B-V= +0.86, U-B= +0.37, R-I= +0.34
Diameter: 0.44 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.35 A.U.s
Angular size of star in sky in CZ: 0.666126 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.