19 Draconis

light-years
Proper names: 19 Draconis
Catalog numbers:
     Gliese (Gl) 648, Henry Draper (HD) 153597, Bonner Durchmusterung (BD) +65°1157, Hipparcos Input Catalog (HIC) 82860, Smithsonian Astrophysical Observatory (SAO) 17281, Hoffleit Bright Star (HR) 6315, New Suspected Variable (NSV) 8078
Heavy element abundance: 60% of Sol
Source for heavy element abundance: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Arity: singular
Right Ascension and Declination: 16h56m1.64s, +65°8'5.46" (epoch 2000.0)
Distance from Sol: 49.21 light-years (15.09 parsecs)
Standard error in distance: 0.719%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -5.701, -19.89, 44.65
Galactic (X,Y,Z) coordinates in ly: -3.845, 39.39, 29.24
Proper motion: 0.229 arcsec/yr (76.6° from north)
Radial Velocity: -20.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 0.710, -7.041, -25.59

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: F6
Luminosity Class: V
Apparent visual magnitude: +4.89
Absolute visual magnitude: +4.00
Visual luminosity: 2.188 x Sol
Color indices: B-V= +0.48, U-B= -0.03, R-I= +0.17
Diameter: 1.135 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.479 A.U.s
Angular size of star in sky in CZ: 0.409084 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.