Bonner Durchmusterung +10°3665

light-years

Catalog numbers:
     Gliese (Gl) 727, Henry Draper (HD) 174080, Bonner Durchmusterung (BD) +10°3665, Giclas (G) 141-37, Hipparcos Input Catalog (HIC) 92283, Smithsonian Astrophysical Observatory (SAO) 104119, Vyssotsky McCormick (McC) 325
Arity: singular
Right Ascension and Declination: 18h48m29.39s, +10°44'38.1" (epoch 2000.0)
Distance from Sol: 56.4 light-years (17.3 parsecs)
Standard error in distance: 1.6508%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 11.6, -54.2, 10.5
Galactic (X,Y,Z) coordinates in ly: 41.4, 38.0, 4.95
Proper motion: 0.447 arcsec/yr (163.9° from north)
Radial Velocity: -8.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 13.5, -23.9, -25.7

What do all these fields mean?


Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +7.97
Absolute visual magnitude: +6.78
Visual luminosity: 0.17 x Sol
Color indices: B-V= +1.07, U-B= +0.98, R-I= +0.40
Diameter: 0.78 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.41 A.U.s
Angular size of star in sky in CZ: 1.009215 degrees

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