Bonner Durchmusterung +79°212

light-years

Catalog numbers:
     Gliese (Gl) 240.1, Henry Draper (HD) 46588, Bonner Durchmusterung (BD) +79°212, Luyten Half-Second (LHS) 1868, Hipparcos Input Catalog (HIC) 32439, Smithsonian Astrophysical Observatory (SAO) 5946, Fifth Fundamental Catalogue (FK5) 248, Hoffleit Bright Star (HR) 2401, Woolley (Wo) 9215
Age: 4300 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: possible spectroscopic binary
Right Ascension and Declination: 6h46m14.073s, +79°33'53.27" (epoch 2000.0)
Distance from Sol: 58.22 light-years (17.85 parsecs)
Standard error in distance: 0.9372%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -2.113, 10.33, 57.26
Galactic (X,Y,Z) coordinates in ly: -36.56, 36.94, 26.24
Proper motion: 0.613 arcsec/yr (187.7° from north)
Radial Velocity: 15.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -49.57, -21.54, -3.923

What do all these fields mean?


Spectral class: F8
Luminosity Class: V
Apparent visual magnitude: +5.45
Absolute visual magnitude: +4.19
Visual luminosity: 1.840 x Sol
Color indices: B-V= +0.50, U-B= -0.02
Diameter: 1.08 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.357 A.U.s
Angular size of star in sky in CZ: 0.424403 degrees

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