Bonner Durchmusterung -0°2944
Catalog numbers:
Gliese (Gl) 580, Henry Draper (HD) 135204, Bonner Durchmusterung (BD) -0°2944, Luyten Half-Second (LHS) 393, Hipparcos Input Catalog (HIC) 74537, Smithsonian Astrophysical Observatory (SAO) 140392, Aitken Double Star (ADS) 9544
Arity: binary
Right Ascension and Declination: 15h13m50.886s, -1°21'3.94" (epoch 2000.0)
Distance from Sol: 56.4 light-years (17.3 parsecs)
Standard error in distance: 1.4493%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -37.4, -42.2, -1.33
Galactic (X,Y,Z) coordinates in ly: 40.0, -0.40, 39.8
Proper motion: 1.373 arcsec/yr (249.0° from north)
Radial Velocity: -69.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -85.8, -99.7, -12.9
What do all these fields mean?
Data for A and B's orbit around one other:
Combined spectrum: K0 V
Combined absolute visual magnitude: +5.41
Combined visual luminosity: 0.60 x Sol
Observed Separation: 1.73 A.U.s
As seen from A:
B would appear as magnitude -24.22
As seen from B:
A would appear as magnitude -24.22
Component A:
Apparent visual magnitude: +7.35
Absolute visual magnitude: +6.16
Visual luminosity: 0.30 x Sol
Diameter: 0.82 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.55 A.U.s
Angular size of star in sky in CZ: 0.799047 degrees
Component B:
Apparent visual magnitude: +7.35
Absolute visual magnitude: +6.16
Visual luminosity: 0.30 x Sol
Comfort Zone (visual): 0.55 A.U.s
Data for this star system were most recently updated on 4-April-2001.