Bonner Durchmusterung +30°1367a

light-years

Catalog numbers:
     Gliese (Gl) 254, Henry Draper Extension (HDE) 266611, Bonner Durchmusterung (BD) +30°1367a, Hipparcos Input Catalog (HIC) 33428, Vyssotsky McCormick (McC) 13
Arity: singular
Right Ascension and Declination: 6h57m4.688s, +30°45'23.98" (epoch 2000.0)
Distance from Sol: 60.8 light-years (18.6 parsecs)
Standard error in distance: 3.3495%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -12.9, 50.6, 31.1
Galactic (X,Y,Z) coordinates in ly: -58.3, -6.00, 15.9
Proper motion: 0.23 arcsec/yr (157.6° from north)
Radial Velocity: -7.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 9.50, -19.4, -2.30

What do all these fields mean?


Spectral class: K7
Luminosity Class: V
Apparent visual magnitude: +9.68
Absolute visual magnitude: +8.33
Visual luminosity: 0.040 x Sol
Color indices: B-V= +1.36, U-B= +1.23, R-I= +0.62
Diameter: 0.62 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.20 A.U.s
Angular size of star in sky in CZ: 1.642764 degrees

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