Bonner Durchmusterung +46°1889

light-years

Catalog numbers:
     Gliese (Gl) 521, Bonner Durchmusterung (BD) +46°1889, Giclas (G) 177-50, Hipparcos Input Catalog (HIC) 66625, Smithsonian Astrophysical Observatory (SAO) 44697, Vyssotsky McCormick (McC) 305
Arity: singular
Right Ascension and Declination: 13h39m24.1s, +46°11'12.47" (epoch 2000.0)
Distance from Sol: 43.2 light-years (13.3 parsecs)
Standard error in distance: 2.0644%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -27.2, -12.6, 31.2
Galactic (X,Y,Z) coordinates in ly: -2.28, 15.5, 40.3
Proper motion: 0.402 arcsec/yr (353.3° from north)
Radial Velocity: -65.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -14.9, -7.64, -68.0

What do all these fields mean?


Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +10.24
Absolute visual magnitude: +9.63
Visual luminosity: 0.012 x Sol
Color indices: B-V= +1.42, U-B= +1.08, R-I= +0.85
Comfort Zone (visual): 0.11 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.