Bonner Durchmusterung +28°3900

light-years

Catalog numbers:
     Gliese (Gl) 808.2, Henry Draper (HD) 198550, Bonner Durchmusterung (BD) +28°3900, Hipparcos Input Catalog (HIC) 102851, Smithsonian Astrophysical Observatory (SAO) 89188
Arity: singular
Right Ascension and Declination: 20h50m10.558s, +29°23'3.31" (epoch 2000.0)
Distance from Sol: 67.4 light-years (20.7 parsecs)
Standard error in distance: 3.5294%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 39.7, -43.3, 33.1
Galactic (X,Y,Z) coordinates in ly: 19.1, 63.7, -11.1
Proper motion: 0.041 arcsec/yr (149.1° from north)
Radial Velocity: -8.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -1.21, -8.83, -2.36

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.36
Absolute visual magnitude: +6.78
Visual luminosity: 0.17 x Sol
Color indices: B-V= +1.06, U-B= +0.93
Comfort Zone (visual): 0.41 A.U.s

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