Cape Photographic Durchmusterung -67°3703

light-years

Catalog numbers:
     Gliese (Gl) 776, Henry Draper (HD) 189567, Cape Photographic Durchmusterung (CPD) -67°3703, Luyten Half-Second (LHS) 484, Hipparcos Input Catalog (HIC) 98959, Smithsonian Astrophysical Observatory (SAO) 254721, Hoffleit Bright Star (HR) 7644
Heavy element abundance: 51% of Sol
Standard error in heavy element abundance: 2%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 20h5m32.706s, -67°19'15.47" (epoch 2000.0)
Distance from Sol: 57.8 light-years (17.7 parsecs)
Standard error in distance: 1.2939%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 11.6, -19.0, -53.3
Galactic (X,Y,Z) coordinates in ly: 41.6, -25.4, -31.0
Proper motion: 1.081 arcsec/yr (129.8° from north)
Radial Velocity: -12.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -71.7, -32.7, -46.7

What do all these fields mean?


Spectral class: G2
Luminosity Class: V
Apparent visual magnitude: +6.08
Absolute visual magnitude: +4.84
Visual luminosity: 1.01 x Sol
Color indices: B-V= +0.65, U-B= +0.07, R-I= +0.23
Diameter: 1.05 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.01 A.U.s
Angular size of star in sky in CZ: 0.554735 degrees

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