Bonner Durchmusterung +13°5006

light-years

Catalog numbers:
     Woolley (Wo) 9798, Henry Draper (HD) 216259, Bonner Durchmusterung (BD) +13°5006, Hipparcos Input Catalog (HIC) 112870, Smithsonian Astrophysical Observatory (SAO) 108215, FK5 Extension (FK5 Ext) 6017, Luyten Two-Tenth (LTT) 16716
Arity: singular
Right Ascension and Declination: 22h51m26.35s, +13°58'12.1" (epoch 2000.0)
Distance from Sol: 68.6 light-years (21.0 parsecs)
Standard error in distance: 2.421%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 63.6, -19.6, 16.6
Galactic (X,Y,Z) coordinates in ly: 4.84, 52.5, -43.9
Proper motion: 0.462 arcsec/yr (62.5° from north)
Radial Velocity: -1.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -46.0, -0.69, -3.24

What do all these fields mean?


Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +8.29
Absolute visual magnitude: +6.68
Visual luminosity: 0.19 x Sol
Color indices: B-V= +0.84, U-B= +0.44
Diameter: 0.81 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.43 A.U.s
Angular size of star in sky in CZ: 1.002219 degrees

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