Bonner Durchmusterung +4°3911

light-years

Catalog numbers:
     Gliese (Gl) 736, Henry Draper (HD) 175541, Bonner Durchmusterung (BD) +4°3911, Hipparcos Input Catalog (HIC) 92895, Smithsonian Astrophysical Observatory (SAO) 124054
Arity: singular
Right Ascension and Declination: 18h55m40.906s, +4°15'54.62" (epoch 2000.0)
Distance from Sol: 78 light-years (24 parsecs)
Standard error in distance: 12.5%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 19, -75, 5.8
Galactic (X,Y,Z) coordinates in ly: 62, 47, 0.7
Proper motion: 0.099 arcsec/yr (181.7° from north)
Radial Velocity: 20.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 22, 4.3, -4.7

What do all these fields mean?


Spectral class: G8
Luminosity Class: V
Apparent visual magnitude: +8.01
Absolute visual magnitude: +6.12
Visual luminosity: 0.3 x Sol
Color indices: B-V= +0.90, U-B= +0.56, R-I= +0.33
Diameter: 0.75 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.6 A.U.s
Angular size of star in sky in CZ: 0.719152 degrees

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