Bonner Durchmusterung +28°4704

light-years

Catalog numbers:
     Gliese (Gl) 5, Henry Draper (HD) 166, Bonner Durchmusterung (BD) +28°4704, Hipparcos Input Catalog (HIC) 544, Smithsonian Astrophysical Observatory (SAO) 73743, Hoffleit Bright Star (HR) 8, New Suspected Variable (NSV) 33
Age: 40 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: singular
Right Ascension and Declination: 0h6m36.75s, +29°1'17.6" (epoch 2000.0)
Distance from Sol: 44.7 light-years (13.7 parsecs)
Standard error in distance: 1.0172%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 39.1, 1.13, 21.7
Galactic (X,Y,Z) coordinates in ly: -14.1, 34.9, -24.1
Proper motion: 0.422 arcsec/yr (114.1° from north)
Radial Velocity: -5.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -15.8, -20.6, -10.4

What do all these fields mean?


Spectral class: K0e
Luminosity Class: V
Apparent visual magnitude: +6.10
Absolute visual magnitude: +5.42
Visual luminosity: 0.59 x Sol
Color indices: B-V= +0.75
Diameter: 1.06 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.77 A.U.s
Angular size of star in sky in CZ: 0.733603 degrees

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