Bonner Durchmusterung +11°2625

light-years

Catalog numbers:
     Gliese (Gl) 538, Henry Draper (HD) 122742, Bonner Durchmusterung (BD) +11°2625, Hipparcos Input Catalog (HIC) 68682, Smithsonian Astrophysical Observatory (SAO) 100832, Hoffleit Bright Star (HR) 5273
Age: 5100 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: singular
Right Ascension and Declination: 14h3m32.351s, +10°47'12.55" (epoch 2000.0)
Distance from Sol: 54.1 light-years (16.6 parsecs)
Standard error in distance: 1.2783%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -45.6, -27.3, 10.1
Galactic (X,Y,Z) coordinates in ly: 22.0, -2.65, 49.4
Proper motion: 0.322 arcsec/yr (163.8° from north)
Radial Velocity: -11.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 14.2, -13.6, -19.8

What do all these fields mean?


NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: G8
Luminosity Class: V
Apparent visual magnitude: +6.29
Absolute visual magnitude: +5.19
Visual luminosity: 0.73 x Sol
Color indices: B-V= +0.74, U-B= +0.29, R-I= +0.26
Diameter: 1.02 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.86 A.U.s
Angular size of star in sky in CZ: 0.633288 degrees

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