Bonner Durchmusterung +50°1979

light-years

Catalog numbers:
     Gliese (Gl) 498, Henry Draper (HD) 113827, Bonner Durchmusterung (BD) +50°1979, Hipparcos Input Catalog (HIC) 63894, Smithsonian Astrophysical Observatory (SAO) 44462, Vyssotsky McCormick (McC) 685
Arity: singular
Right Ascension and Declination: 13h5m41.392s, +49°28'18.55" (epoch 2000.0)
Distance from Sol: 71.4 light-years (21.9 parsecs)
Standard error in distance: 2.663%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -44.5, -13.1, 54.3
Galactic (X,Y,Z) coordinates in ly: -11.8, 24.4, 66.0
Proper motion: 0.142 arcsec/yr (24.1° from north)
Radial Velocity: -3.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -1.94, 12.3, -8.47

What do all these fields mean?


Spectral class: K8
Luminosity Class: V
Apparent visual magnitude: +9.31
Absolute visual magnitude: +7.61
Visual luminosity: 0.079 x Sol
Color indices: B-V= +1.17, U-B= +1.04, R-I= +0.46
Diameter: 0.71 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: 1.347485 degrees

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