Bonner Durchmusterung +17°917

light-years

Catalog numbers:
     Gliese (Gl) 201, Henry Draper (HD) 35171, Bonner Durchmusterung (BD) +17°917, Hipparcos Input Catalog (HIC) 25220, Smithsonian Astrophysical Observatory (SAO) 94513, Vyssotsky McCormick (McC) 462
Arity: singular
Right Ascension and Declination: 5h23m38.39s, +17°19'27.38" (epoch 2000.0)
Distance from Sol: 46.8 light-years (14.3 parsecs)
Standard error in distance: 2.105%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 7.05, 44.1, 13.9
Galactic (X,Y,Z) coordinates in ly: -45.7, -6.01, -8.01
Proper motion: 0.251 arcsec/yr (89.1° from north)
Radial Velocity: 37.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -38.2, -14.2, 7.77

What do all these fields mean?


Spectral class: K5e
Luminosity Class: V
Apparent visual magnitude: +7.95
Absolute visual magnitude: +7.17
Visual luminosity: 0.12 x Sol
Color indices: B-V= +1.09, U-B= +1.00, R-I= +0.44
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: 1.210992 degrees

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