Cape Photographic Durchmusterung -50°11256

light-years

Catalog numbers:
     Gliese (Gl) 773.6, Henry Draper (HD) 189484, Cape Photographic Durchmusterung (CPD) -50°11256, Luyten Half-Second (LHS) 3508, Hipparcos Input Catalog (HIC) 98679, Smithsonian Astrophysical Observatory (SAO) 246404, UGPMF 487, Woolley (Wo) 9680, New Suspected Variable (NSV) 12689
Arity: singular
Right Ascension and Declination: 20h2m35.12s, -50°3'9.2" (epoch 2000.0)
Distance from Sol: 38 light-years (12 parsecs)
Standard error in distance: 11.6451%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 13, -21, -30
Galactic (X,Y,Z) coordinates in ly: 32, -6.2, -21
Proper motion: 0.532 arcsec/yr (135.4° from north)
Radial Velocity: 19.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 0.5, -20, -30

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.69
Absolute visual magnitude: +8.33
Visual luminosity: 0.04 x Sol
Color indices: B-V= +1.12, U-B= +1.09, R-I= +0.42
Diameter: 0.78 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.2 A.U.s
Angular size of star in sky in CZ: 2.063887 degrees

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