Catalogue Astrographique +44°871-589

light-years

Catalog numbers:
     Gliese (Gl) 806, Giclas (G) 209-41, Luyten Half-Second (LHS) 3577, Hipparcos Input Catalog (HIC) 102401, Catalogue Astrographique (AC) +44°871-589
Arity: singular
Right Ascension and Declination: 20h45m4.093s, +44°29'56.81" (epoch 2000.0)
Distance from Sol: 40.8 light-years (12.5 parsecs)
Standard error in distance: 1.9245%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 19.2, -21.9, 28.6
Galactic (X,Y,Z) coordinates in ly: 3.97, 40.6, 0.63
Proper motion: 0.506 arcsec/yr (56.7° from north)
Radial Velocity: -24.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -30.8, -21.4, -9.46

What do all these fields mean?


Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +10.79
Absolute visual magnitude: +10.31
Visual luminosity: 0.0066 x Sol
Color indices: B-V= +1.53, U-B= +1.19, R-I= +0.93
Comfort Zone (visual): 0.081 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.