Bonner Durchmusterung +75°154

light-years

Catalog numbers:
     Gliese (Gl) 156.2, Henry Draper (HD) 24451, Bonner Durchmusterung (BD) +75°154 , Giclas (G) 248-10, Luyten Half-Second (LHS) 1619, Hipparcos Input Catalog (HIC) 18774, Smithsonian Astrophysical Observatory (SAO) 5056, Woolley (Wo) 9139
Arity: singular
Right Ascension and Declination: 4h1m19.6s, +76°9'33.79" (epoch 2000.0)
Distance from Sol: 52.1 light-years (16.0 parsecs)
Standard error in distance: 1.3714%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 6.17, 10.8, 50.6
Galactic (X,Y,Z) coordinates in ly: -34.3, 35.8, 15.9
Proper motion: 0.637 arcsec/yr (147.3° from north)
Radial Velocity: 20 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -49.4, -16.3, -4.54

What do all these fields mean?


Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +8.24
Absolute visual magnitude: +7.22
Visual luminosity: 0.11 x Sol
Color indices: B-V= +1.15
Diameter: 0.78 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: 1.239657 degrees

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