Bonner Durchmusterung +83°297

light-years

Catalog numbers:
     Gliese (Gl) 392.1, Henry Draper (HD) 90089, Bonner Durchmusterung (BD) +83°297, Hipparcos Input Catalog (HIC) 51502, Smithsonian Astrophysical Observatory (SAO) 1714, Fifth Fundamental Catalogue (FK5) 911, Hoffleit Bright Star (HR) 4084, Woolley (Wo) 9330, New Suspected Variable (NSV) 4864
Arity: singular
Right Ascension and Declination: 10h31m4.565s, +82°33'31.09" (epoch 2000.0)
Distance from Sol: 70.1 light-years (21.5 parsecs)
Standard error in distance: 1.168%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -8.40, 3.43, 69.5
Galactic (X,Y,Z) coordinates in ly: -36.0, 46.1, 38.6
Proper motion: 0.087 arcsec/yr (286.8° from north)
Radial Velocity: 4.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -8.71, 2.64, -3.66

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: F2
Luminosity Class: V
Apparent visual magnitude: +5.26
Absolute visual magnitude: +3.60
Visual luminosity: 3.18 x Sol
Color indices: B-V= +0.37, U-B= -0.05
Diameter: 0.88 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.78 A.U.s
Angular size of star in sky in CZ: 0.261788 degrees

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