Bonner Durchmusterung +2°1729

light-years

Catalog numbers:
     Gliese (Gl) 281, Bonner Durchmusterung (BD) +2°1729, Giclas (G) 112-35, Hipparcos Input Catalog (HIC) 37288, Vyssotsky McCormick (McC) 503
Arity: singular
Right Ascension and Declination: 7h39m23.082s, +2°11'1.2" (epoch 2000.0)
Distance from Sol: 48.5 light-years (14.9 parsecs)
Standard error in distance: 2.1954%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -20.4, 44.0, 1.85
Galactic (X,Y,Z) coordinates in ly: -37.9, -28.5, 10.2
Proper motion: 0.27 arcsec/yr (205.0° from north)
Radial Velocity: 10 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.42, -17.0, -12.7

What do all these fields mean?


Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +9.66
Absolute visual magnitude: +8.80
Visual luminosity: 0.026 x Sol
Color indices: B-V= +1.44, U-B= +1.28, R-I= +0.71
Comfort Zone (visual): 0.16 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.