Bonner Durchmusterung +1°4774

light-years

Catalog numbers:
     Gliese (Gl) 908, Bonner Durchmusterung (BD) +1°4774, Luyten Half-Second (LHS) 550, Hipparcos Input Catalog (HIC) 117473, Smithsonian Astrophysical Observatory (SAO) 128397, Vyssotsky McCormick (McC) 82, New Suspected Variable (NSV) 14719
Arity: singular
Right Ascension and Declination: 23h49m12.542s, +2°24'5.78" (epoch 2000.0)
Distance from Sol: 19.47 light-years (5.970 parsecs)
Standard error in distance: 0.8817%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 19.43, -0.916, 0.816
Galactic (X,Y,Z) coordinates in ly: -0.901, 10.59, -16.31
Proper motion: 1.37 arcsec/yr (133.4° from north)
Radial Velocity: -71.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -8.506, -70.06, 40.07

What do all these fields mean?


Spectral class: M1n
Luminosity Class: V
Apparent visual magnitude: +8.98
Absolute visual magnitude: +10.10
Visual luminosity: 0.00791 x Sol
Variable type: UV Ceti flare star (eruptive variable)
Color indices: B-V= +1.48, U-B= +1.09, R-I= +0.85
Mass: 0.24 x Sol
Comfort Zone (visual): 0.0889 A.U.s
Orbital period in CZ: 19.7763 days
Tidal index in CZ: 341.105

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.