Bonner Durchmusterung +57°1961

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1233, Henry Draper (HD) 180161, Bonner Durchmusterung (BD) +57°1961, Giclas (G) 229-26, Luyten Half-Second (LHS) 6, Hipparcos Input Catalog (HIC) 94346, Smithsonian Astrophysical Observatory (SAO) 31474, AGK3 Reference (AGK3R) 17144, Woolley (Wo) 9650
Arity: singular
Right Ascension and Declination: 19h12m11.279s, +57°40'18.9" (epoch 2000.0)
Distance from Sol: 65.2 light-years (20.0 parsecs)
Standard error in distance: 1.0685%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 10.8, -33.2, 55.1
Galactic (X,Y,Z) coordinates in ly: 1.57, 61.3, 22.2
Proper motion: 0.451 arcsec/yr (26.7° from north)
Radial Velocity: -26.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -43.0, -21.9, -13.6

What do all these fields mean?


Spectral class: G8
Luminosity Class: V
Apparent visual magnitude: +7.04
Absolute visual magnitude: +5.53
Visual luminosity: 0.53 x Sol
Color indices: B-V= +0.79, U-B= +0.43
Diameter: 2 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.73 A.U.s
Angular size of star in sky in CZ: 1.459568 degrees

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