Wolf 918

light-years

Catalog numbers:
     Gliese (Gl) 821, Luyten Half-Second (LHS) 65, Hipparcos Input Catalog (HIC) 104432, Wolf 918
Arity: singular
Right Ascension and Declination: 21h9m17.44s, -13°18'8.7" (epoch 2000.0)
Distance from Sol: 39.6 light-years (12.1 parsecs)
Standard error in distance: 2.8325%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 28.3, -26.1, -9.12
Galactic (X,Y,Z) coordinates in ly: 25.3, 18.9, -23.9
Proper motion: 2.096 arcsec/yr (160.1° from north)
Radial Velocity: -61 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -28.0, -129, -30.6

What do all these fields mean?


Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +10.87
Absolute visual magnitude: +10.45
Visual luminosity: 0.0057 x Sol
Color indices: B-V= +1.50, U-B= +1.10, R-I= +0.86
Comfort Zone (visual): 0.076 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.