Bonner Durchmusterung +54°2281

light-years

Catalog numbers:
     Henry Draper (HD) 190780, Bonner Durchmusterung (BD) +54°2281
Arity: singular
Right Ascension and Declination: 20h2m53s, +54°19'30" (epoch 1950.0)
Distance from Sol: 60 light-years (19 parsecs)
Standard error in distance: 11.4754%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 18, -30, 49
Galactic (X,Y,Z) coordinates in ly: 1.5, 59, 13
Proper motion: 0.124 arcsec/yr (157.7° from north)
Radial Velocity: -9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 6.4, -7.1, -10

What do all these fields mean?


Spectral class: K0
Luminosity Class: V
Apparent visual magnitude: +7.72
Absolute visual magnitude: +6.38
Visual luminosity: 0.2 x Sol
Color indices: B-V= +0.94, U-B= +0.65
Comfort Zone (visual): 0.5 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.