Bonner Durchmusterung +32°1561

light-years

Catalog numbers:
     Gliese (Gl) 273.1, Henry Draper (HD) 58830, Bonner Durchmusterung (BD) +32°1561, Hipparcos Input Catalog (HIC) 36322, Smithsonian Astrophysical Observatory (SAO) 60106, Vyssotsky McCormick (McC) 880, Woolley (Wo) 9233
Arity: singular
Right Ascension and Declination: 7h28m35.784s, +31°51'49.1" (epoch 2000.0)
Distance from Sol: 68 light-years (21 parsecs)
Standard error in distance: 10.8856%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -22, 53, 36
Galactic (X,Y,Z) coordinates in ly: -62, -8.0, 25
Proper motion: 0.232 arcsec/yr (44.4° from north)
Radial Velocity: -4.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 10, 11, 17

What do all these fields mean?


Spectral class: K8
Luminosity Class: V
Apparent visual magnitude: +7.74
Absolute visual magnitude: +6.16
Visual luminosity: 0.3 x Sol
Color indices: B-V= +0.94, U-B= +0.65, R-I= +0.37
Diameter: 2.1 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.5 A.U.s
Angular size of star in sky in CZ: 2.016596 degrees

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