Bonner Durchmusterung +50°2815

light-years

Catalog numbers:
     Henry Draper (HD) 184960, Bonner Durchmusterung (BD) +50°2815, Hipparcos Input Catalog (HIC) 96258, Smithsonian Astrophysical Observatory (SAO) 31782, Hoffleit Bright Star (HR) 7451
Heavy element abundance: 75% of Sol
Standard error in heavy element abundance: 0%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 19h34m19.763s, +51°14'12.01" (epoch 2000.0)
Distance from Sol: 83.5 light-years (25.6 parsecs)
Standard error in distance: 1.1884%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 20.9, -47.9, 65.1
Galactic (X,Y,Z) coordinates in ly: 8.92, 80.3, 20.8
Proper motion: 0.185 arcsec/yr (173.6° from north)
Radial Velocity: 0.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 19.2, 1.27, -11.5

What do all these fields mean?


Spectral class: F7
Luminosity Class: V
Apparent visual magnitude: +5.73
Absolute visual magnitude: +3.69
Visual luminosity: 2.91 x Sol
Color indices: B-V= +0.48, U-B= +0.00, R-I= +0.17
Diameter: 1.38 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.71 A.U.s
Angular size of star in sky in CZ: 0.429617 degrees

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