Bonner Durchmusterung +52°2294

light-years

Catalog numbers:
     Gliese (Gl) 732.1, Henry Draper (HD) 175225, Bonner Durchmusterung (BD) +52°2294, Hipparcos Input Catalog (HIC) 92549, Smithsonian Astrophysical Observatory (SAO) 31217, Hoffleit Bright Star (HR) 7123
Arity: possible spectroscopic binary
Right Ascension and Declination: 18h51m35.174s, +52°58'29.27" (epoch 2000.0)
Distance from Sol: 85.1 light-years (26.1 parsecs)
Standard error in distance: 1.3134%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 11.4, -50.0, 68.0
Galactic (X,Y,Z) coordinates in ly: 9.98, 78.7, 30.8
Proper motion: 0.259 arcsec/yr (354.6° from north)
Radial Velocity: -1.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -30.0, -2.31, 11.2

What do all these fields mean?


Spectral class: G9
Luminosity Class: IVa
Apparent visual magnitude: +5.51
Absolute visual magnitude: +3.43
Visual luminosity: 3.70 x Sol
Color indices: B-V= +0.84, U-B= +0.51
Diameter: 2.52 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.92 A.U.s
Angular size of star in sky in CZ: 0.699120 degrees

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