Bonner Durchmusterung +47°2420

light-years

Catalog numbers:
     Gliese (Gl) 651, Henry Draper (HD) 154345, Bonner Durchmusterung (BD) +47°2420, Luyten Half-Second (LHS) 3260, Hipparcos Input Catalog (HIC) 83389, Smithsonian Astrophysical Observatory (SAO) 46452, New Suspected Variable (NSV) 8148
Age: 5200 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: singular
Right Ascension and Declination: 17h2m36.394s, +47°4'55.84" (epoch 2000.0)
Distance from Sol: 58.91 light-years (18.06 parsecs)
Standard error in distance: 0.9835%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -9.940, -38.86, 43.14
Galactic (X,Y,Z) coordinates in ly: 13.72, 44.72, 35.80
Proper motion: 0.874 arcsec/yr (7.9° from north)
Radial Velocity: -47.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -80.66, -9.335, -35.26

What do all these fields mean?


Spectral class: G8
Luminosity Class: V
Apparent visual magnitude: +6.76
Absolute visual magnitude: +5.48
Visual luminosity: 0.561 x Sol
Color indices: B-V= +0.73, U-B= +0.27
Diameter: 0.87 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.749 A.U.s
Angular size of star in sky in CZ: 0.619181 degrees

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