Bonner Durchmusterung +16°3752

light-years

Catalog numbers:
     Gliese (Gl) 746, Henry Draper (HD) 178428, Bonner Durchmusterung (BD) +16°3752, Hipparcos Input Catalog (HIC) 93966, Smithsonian Astrophysical Observatory (SAO) 104511, Hoffleit Bright Star (HR) 7260
Arity: singular
Right Ascension and Declination: 19h7m57.27s, +16°51'12.2" (epoch 2000.0)
Distance from Sol: 68.3 light-years (21.0 parsecs)
Standard error in distance: 1.588%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 19.1, -62.6, 19.8
Galactic (X,Y,Z) coordinates in ly: 43.7, 52.3, 4.32
Proper motion: 0.31 arcsec/yr (169.0° from north)
Radial Velocity: 14.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 28.7, -3.17, -18.2

What do all these fields mean?


NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: G5
Luminosity Class: V
Apparent visual magnitude: +6.09
Absolute visual magnitude: +4.48
Visual luminosity: 1.41 x Sol
Color indices: B-V= +0.70, U-B= +0.27
Diameter: 0.96 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.19 A.U.s
Angular size of star in sky in CZ: 0.431505 degrees

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