Bonner Durchmusterung -6°1339

light-years

Catalog numbers:
     Gliese (Gl) 221, Bonner Durchmusterung (BD) -6°1339, Vyssotsky McCormick (McC) 10
Arity: singular
Right Ascension and Declination: 5h53m0.264s, -5°59'40.26" (epoch 2000.0)
Distance from Sol: 64 light-years (20 parsecs)
Standard error in distance: 18.5897%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 1.9, 64, -6.7
Galactic (X,Y,Z) coordinates in ly: -53, -33, -17
Proper motion: 0.333 arcsec/yr (180.0° from north)
Radial Velocity: 22.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -0.4, -33, -19

What do all these fields mean?


Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +9.70
Absolute visual magnitude: +8.23
Visual luminosity: 0.04 x Sol
Color indices: B-V= +1.33, U-B= +1.25, R-I= +0.62
Comfort Zone (visual): 0.2 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.