Bonner Durchmusterung +5°3409

light-years

Catalog numbers:
     Gliese (Gl) 678.1, Bonner Durchmusterung (BD) +5°3409, Giclas (G) 139-43, Hipparcos Input Catalog (HIC) 85665, Smithsonian Astrophysical Observatory (SAO) 122446, Vyssotsky McCormick (McC) 321, Woolley (Wo) 9592
Arity: singular
Right Ascension and Declination: 17h30m22.71s, +5°32'54.5" (epoch 2000.0)
Distance from Sol: 32.6 light-years (9.98 parsecs)
Standard error in distance: 1.2812%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -4.18, -32.1, 3.15
Galactic (X,Y,Z) coordinates in ly: 26.8, 14.8, 11.1
Proper motion: 0.262 arcsec/yr (174.4° from north)
Radial Velocity: -3.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 3.91, -9.75, -7.61

What do all these fields mean?


Spectral class: M1
Luminosity Class: V
Apparent visual magnitude: +9.33
Absolute visual magnitude: +9.33
Visual luminosity: 0.016 x Sol
Color indices: B-V= +1.49, U-B= +1.23, R-I= +0.76
Diameter: 0.58 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.13 A.U.s
Angular size of star in sky in CZ: 2.433478 degrees

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