Bonner Durchmusterung +26°3151

light-years

Catalog numbers:
     Gliese (Gl) 700.2, Henry Draper (HD) 164922, Bonner Durchmusterung (BD) +26°3151, Giclas (G) 182-35, Luyten Half-Second (LHS) 3353, Hipparcos Input Catalog (HIC) 88348, Smithsonian Astrophysical Observatory (SAO) 85678, Woolley (Wo) 9613
Age: 10700 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: singular
Right Ascension and Declination: 18h2m30.81s, +26°18'46.1" (epoch 2000.0)
Distance from Sol: 71.5 light-years (21.9 parsecs)
Standard error in distance: 1.5328%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 0.70, -64.1, 31.7
Galactic (X,Y,Z) coordinates in ly: 40.6, 52.8, 26.1
Proper motion: 0.715 arcsec/yr (148.1° from north)
Radial Velocity: 20.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 60.5, 5.08, -47.6

What do all these fields mean?


Spectral class: K0
Luminosity Class: V
Apparent visual magnitude: +7.01
Absolute visual magnitude: +5.31
Visual luminosity: 0.65 x Sol
Color indices: B-V= +0.80, U-B= +0.47, R-I= +0.24
Diameter: 0.9 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.81 A.U.s
Angular size of star in sky in CZ: 0.593095 degrees

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