Bonner Durchmusterung +35°4725

light-years

Catalog numbers:
     Gliese (Gl) 850, Henry Draper (HD) 210667, Bonner Durchmusterung (BD) +35°4725, Giclas (G) 214-13, Hipparcos Input Catalog (HIC) 109527, Smithsonian Astrophysical Observatory (SAO) 72103
Arity: singular
Right Ascension and Declination: 22h11m11.936s, +36°15'22.82" (epoch 2000.0)
Distance from Sol: 73.2 light-years (22.4 parsecs)
Standard error in distance: 1.7416%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 52.5, -27.0, 43.3
Galactic (X,Y,Z) coordinates in ly: -0.91, 70.2, -20.5
Proper motion: 0.249 arcsec/yr (173.6° from north)
Radial Velocity: -18.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 13.4, -23.9, -17.0

What do all these fields mean?


Spectral class: K0
Luminosity Class: V
Apparent visual magnitude: +7.26
Absolute visual magnitude: +5.51
Visual luminosity: 0.54 x Sol
Color indices: B-V= +0.79, U-B= +0.46
Diameter: 0.87 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.74 A.U.s
Angular size of star in sky in CZ: 0.628617 degrees

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