Catalogue Astrographique -11°2439-179

light-years

Catalog numbers:
     Gliese (Gl) 811.1, Luyten Half-Second (LHS) 502, Hipparcos Input Catalog (HIC) 103388, Catalogue Astrographique (AC) -11°2439-179
Arity: singular
Right Ascension and Declination: 20h56m46.593s, -10°26'55.35" (epoch 2000.0)
Distance from Sol: 48 light-years (15 parsecs)
Standard error in distance: 13.4807%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 33, -34, -8.7
Galactic (X,Y,Z) coordinates in ly: 32, 25, -26
Proper motion: 1.155 arcsec/yr (182.8° from north)
Radial Velocity: 51 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 66, -43, -55

What do all these fields mean?


Spectral class: M4
Luminosity Class: V
Apparent visual magnitude: +11.38
Absolute visual magnitude: +10.53
Visual luminosity: 0.005 x Sol
Color indices: B-V= +1.51, U-B= +1.07, R-I= +1.04
Comfort Zone (visual): 0.07 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.