Bonner Durchmusterung +69°238

light-years

Catalog numbers:
     Gliese (Gl) 161, Henry Draper (HD) 25665, Bonner Durchmusterung (BD) +69°238, Giclas (G) 247-13, Hipparcos Input Catalog (HIC) 19422, Smithsonian Astrophysical Observatory (SAO) 13039
Arity: singular
Right Ascension and Declination: 4h9m35.037s, +69°32'28.89" (epoch 2000.0)
Distance from Sol: 60.2 light-years (18.5 parsecs)
Standard error in distance: 1.4374%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 9.75, 18.7, 56.4
Galactic (X,Y,Z) coordinates in ly: -44.2, 38.4, 14.0
Proper motion: 0.308 arcsec/yr (165.1° from north)
Radial Velocity: -10.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -9.69, -22.3, -15.9

What do all these fields mean?


Spectral class: K2
Luminosity Class: V
Apparent visual magnitude: +7.71
Absolute visual magnitude: +6.38
Visual luminosity: 0.24 x Sol
Color indices: B-V= +0.91, U-B= +0.77
Diameter: 0.78 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.49 A.U.s
Angular size of star in sky in CZ: 0.841561 degrees

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