Bonner Durchmusterung -12°2449

light-years

Catalog numbers:
     Gliese (Gl) 302, Henry Draper (HD) 69830, Bonner Durchmusterung (BD) -12°2449, Luyten Half-Second (LHS) 245, Hipparcos Input Catalog (HIC) 40693, Smithsonian Astrophysical Observatory (SAO) 154093, Hoffleit Bright Star (HR) 3259
Arity: singular
Right Ascension and Declination: 8h18m23.974s, -12°37'55.86" (epoch 2000.0)
Distance from Sol: 41.04 light-years (12.58 parsecs)
Standard error in distance: 0.9595%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -22.74, 32.96, -8.974
Galactic (X,Y,Z) coordinates in ly: -22.90, -32.73, 9.388
Proper motion: 1.033 arcsec/yr (164.0° from north)
Radial Velocity: 30.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 29.09, -61.47, -10.05

What do all these fields mean?


Spectral class: G7.5
Luminosity Class: V
Apparent visual magnitude: +5.96
Absolute visual magnitude: +5.47
Visual luminosity: 0.567 x Sol
Color indices: B-V= +0.76, U-B= +0.32, R-I= +0.26
Mass: 0.85 x Sol
Diameter: 0.960 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.753 A.U.s
Orbital period in CZ: 258.991 days
Tidal index in CZ: 1.98889
Angular size of star in sky in CZ: 0.679497 degrees

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