Bonner Durchmusterung +47°1355

light-years

Catalog numbers:
     Gliese (Gl) 249, Henry Draper (HD) 49601, Bonner Durchmusterung (BD) +47°1355, Giclas (G) 107-27, Luyten Half-Second (LHS) 1874, Hipparcos Input Catalog (HIC) 32919, Vyssotsky McCormick (McC) 239
Arity: singular
Right Ascension and Declination: 6h51m32.442s, +47°22'3.99" (epoch 2000.0)
Distance from Sol: 61.4 light-years (18.8 parsecs)
Standard error in distance: 2.2631%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -9.27, 40.5, 45.2
Galactic (X,Y,Z) coordinates in ly: -56.6, 10.8, 21.2
Proper motion: 0.736 arcsec/yr (198.2° from north)
Radial Velocity: 22.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -43.7, -45.0, -29.5

What do all these fields mean?


Spectral class: K6
Luminosity Class: V
Apparent visual magnitude: +8.99
Absolute visual magnitude: +7.61
Visual luminosity: 0.078 x Sol
Color indices: B-V= +1.24, U-B= +1.16, R-I= +0.50
Diameter: 0.67 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.28 A.U.s
Angular size of star in sky in CZ: 1.275198 degrees

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