Bonner Durchmusterung +21°1949

light-years

Catalog numbers:
     Gliese (Gl) 330.1, Bonner Durchmusterung (BD) +21°1949, Luyten Half-Second (LHS) 2078, Hipparcos Input Catalog (HIC) 44072, Smithsonian Astrophysical Observatory (SAO) 80545, Vyssotsky McCormick (McC) 261
Arity: singular
Right Ascension and Declination: 8h58m38.163s, +20°32'47.71" (epoch 2000.0)
Distance from Sol: 67.2 light-years (20.6 parsecs)
Standard error in distance: 2.5698%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -44.2, 44.8, 23.6
Galactic (X,Y,Z) coordinates in ly: -47.5, -24.4, 40.8
Proper motion: 0.677 arcsec/yr (105.6° from north)
Radial Velocity: -50.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 82.5, -0.28, 12.2

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +9.25
Absolute visual magnitude: +7.68
Visual luminosity: 0.074 x Sol
Color indices: B-V= +1.11, U-B= +1.01, R-I= +0.48
Comfort Zone (visual): 0.27 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.