Bonner Durchmusterung +16°2404

light-years

Catalog numbers:
     Gliese (Gl) 481, Henry Draper (HD) 110315, Bonner Durchmusterung (BD) +16°2404, Hipparcos Input Catalog (HIC) 61901, Smithsonian Astrophysical Observatory (SAO) 100205, Vyssotsky McCormick (McC) 670, AGK3 Reference (AGK3R) 11358
Arity: singular
Right Ascension and Declination: 12h41m6.462s, +15°22'35.26" (epoch 2000.0)
Distance from Sol: 46.6 light-years (14.3 parsecs)
Standard error in distance: 1.5484%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -44.2, -8.02, 12.4
Galactic (X,Y,Z) coordinates in ly: 4.00, -8.98, 45.6
Proper motion: 0.417 arcsec/yr (163.9° from north)
Radial Velocity: 24.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 23.0, -23.0, 18.5

What do all these fields mean?


Spectral class: K4
Luminosity Class: V?
Apparent visual magnitude: +7.95
Absolute visual magnitude: +7.18
Visual luminosity: 0.12 x Sol
Color indices: B-V= +1.12, U-B= +1.02, R-I= +0.44
Diameter: 1.29 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.34 A.U.s
Angular size of star in sky in CZ: 2.010135 degrees

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