Bonner Durchmusterung +0°3090

light-years

Catalog numbers:
     Gliese (Gl) 522, Henry Draper (HD) 119217, Bonner Durchmusterung (BD) +0°3090, Hipparcos Input Catalog (HIC) 66840, Smithsonian Astrophysical Observatory (SAO) 120072, Vyssotsky McCormick (McC) 50
Arity: singular
Right Ascension and Declination: 13h41m55.749s, +0°7'44.85" (epoch 2000.0)
Distance from Sol: 77.3 light-years (23.7 parsecs)
Standard error in distance: 3.7198%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -69.8, -33.3, 0.17
Galactic (X,Y,Z) coordinates in ly: 33.6, -19.3, 66.9
Proper motion: 0.455 arcsec/yr (199.8° from north)
Radial Velocity: 45.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 30.1, -58.0, 21.2

What do all these fields mean?


Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +9.76
Absolute visual magnitude: +7.89
Visual luminosity: 0.061 x Sol
Color indices: B-V= +1.30, U-B= +1.29, R-I= +0.55
Diameter: 0.61 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.25 A.U.s
Angular size of star in sky in CZ: 1.317610 degrees

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