Bonner Durchmusterung -0°3631

light-years

Catalog numbers:
     Gliese (Gl) 740.1, Henry Draper (HD) 176982, Bonner Durchmusterung (BD) -0°3631, Hipparcos Input Catalog (HIC) 93518, Smithsonian Astrophysical Observatory (SAO) 142955, Woolley (Wo) 9640
Arity: singular
Right Ascension and Declination: 19h2m44.37s, +0°42'40.3" (epoch 2000.0)
Distance from Sol: 60 light-years (18 parsecs)
Standard error in distance: 15.814%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 16, -58, 0.7
Galactic (X,Y,Z) coordinates in ly: 49, 35, -2.8
Proper motion: 0.13 arcsec/yr (198.1° from north)
Radial Velocity: -7.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 0.5, -13, -1.5

What do all these fields mean?


Spectral class: G5
Luminosity Class: V
Apparent visual magnitude: +8.36
Absolute visual magnitude: +7.03
Visual luminosity: 0.1 x Sol
Color indices: B-V= +0.73, U-B= +0.29, R-I= +0.39
Diameter: 0.77 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.4 A.U.s
Angular size of star in sky in CZ: 1.120483 degrees

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