Bonner Durchmusterung -20°5833

light-years

Catalog numbers:
     Gliese (Gl) 782, Henry Draper (HD) 191391, Bonner Durchmusterung (BD) -20°5833, Luyten Half-Second (LHS) 3526, Hipparcos Input Catalog (HIC) 99385, Smithsonian Astrophysical Observatory (SAO) 188984, Vyssotsky McCormick (McC) 330
Arity: possible spectroscopic binary
Right Ascension and Declination: 20h10m19.583s, -20°29'35.77" (epoch 2000.0)
Distance from Sol: 51.1 light-years (15.7 parsecs)
Standard error in distance: 2.2814%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 25.8, -40.3, -17.9
Galactic (X,Y,Z) coordinates in ly: 42.1, 17.5, -23.0
Proper motion: 0.565 arcsec/yr (231.0° from north)
Radial Velocity: 19.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 38.7, -23.4, 9.89

What do all these fields mean?


Spectral class: K4p
Luminosity Class: V
Apparent visual magnitude: +8.91
Absolute visual magnitude: +7.94
Visual luminosity: 0.058 x Sol
Color indices: B-V= +1.29, U-B= +1.21, R-I= +0.55
Diameter: 0.7 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.24 A.U.s
Angular size of star in sky in CZ: 1.545621 degrees

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