Bonner Durchmusterung -17°3632

light-years

Catalog numbers:
     Gliese (Gl) 468, Henry Draper (HD) 108581, Bonner Durchmusterung (BD) -17°3632, Hipparcos Input Catalog (HIC) 60866, Smithsonian Astrophysical Observatory (SAO) 157311, Vyssotsky McCormick (McC) 658
Arity: singular
Right Ascension and Declination: 12h28m31.601s, -18°17'50.13" (epoch 2000.0)
Distance from Sol: 81.4 light-years (24.9 parsecs)
Standard error in distance: 2.9768%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -76.6, -9.59, -25.5
Galactic (X,Y,Z) coordinates in ly: 25.9, -52.5, 56.6
Proper motion: 0.267 arcsec/yr (139.3° from north)
Radial Velocity: 2.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 28.2, -4.95, -13.6

What do all these fields mean?


Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +9.24
Absolute visual magnitude: +7.26
Visual luminosity: 0.11 x Sol
Color indices: B-V= +1.24, U-B= +1.20, R-I= +0.48
Diameter: 0.66 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.33 A.U.s
Angular size of star in sky in CZ: 1.065667 degrees

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