Bonner Durchmusterung +25°4085

light-years

Catalog numbers:
     Gliese (Gl) 779.1, Henry Draper (HD) 190470, Bonner Durchmusterung (BD) +25°4085, Hipparcos Input Catalog (HIC) 98828, Smithsonian Astrophysical Observatory (SAO) 88147
Arity: singular
Right Ascension and Declination: 20h4m10.057s, +25°47'24.52" (epoch 2000.0)
Distance from Sol: 70.5 light-years (21.6 parsecs)
Standard error in distance: 1.9284%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 32.7, -54.4, 30.7
Galactic (X,Y,Z) coordinates in ly: 30.4, 63.4, -4.04
Proper motion: 0.085 arcsec/yr (241.1° from north)
Radial Velocity: -6.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 4.24, -8.86, 4.51

What do all these fields mean?


Spectral class: K3
Luminosity Class: V
Apparent visual magnitude: +7.87
Absolute visual magnitude: +6.19
Visual luminosity: 0.29 x Sol
Color indices: B-V= +0.91, U-B= +0.71
Comfort Zone (visual): 0.54 A.U.s

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