Bonner Durchmusterung -20°4399

light-years

Catalog numbers:
     Gliese (Gl) 610, Henry Draper (HD) 144253, Bonner Durchmusterung (BD) -20°4399, Luyten Half-Second (LHS) 5312, Hipparcos Input Catalog (HIC) 78843, Smithsonian Astrophysical Observatory (SAO) 184105
Arity: singular
Right Ascension and Declination: 16h5m40.482s, -20°27'0.24" (epoch 2000.0)
Distance from Sol: 60.5 light-years (18.5 parsecs)
Standard error in distance: 2.0167%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -27.1, -49.8, -21.1
Galactic (X,Y,Z) coordinates in ly: 55.5, -6.68, 23.2
Proper motion: 0.465 arcsec/yr (140.0° from north)
Radial Velocity: 43.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 54.7, -11.4, -20.9

What do all these fields mean?


Spectral class: K3-4
Luminosity Class: V
Apparent visual magnitude: +7.40
Absolute visual magnitude: +6.06
Visual luminosity: 0.33 x Sol
Color indices: B-V= +1.04, U-B= +0.94, R-I= +0.38
Diameter: 0.85 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.57 A.U.s
Angular size of star in sky in CZ: 0.790458 degrees

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