Bonner Durchmusterung +12°1888

light-years

Catalog numbers:
     Gliese (Gl) 315, Henry Draper (HD) 73667, Bonner Durchmusterung (BD) +12°1888, Luyten Half-Second (LHS) 2033, Hipparcos Input Catalog (HIC) 42499, Smithsonian Astrophysical Observatory (SAO) 98015, AGK3 Reference (AGK3R) 7805
Arity: singular
Right Ascension and Declination: 8h39m50.77s, +11°31'21.2" (epoch 2000.0)
Distance from Sol: 60.4 light-years (18.5 parsecs)
Standard error in distance: 1.8902%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -38.0, 45.4, 12.1
Galactic (X,Y,Z) coordinates in ly: -42.9, -30.2, 30.0
Proper motion: 0.519 arcsec/yr (192.1° from north)
Radial Velocity: -13.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 19.2, -30.9, -30.6

What do all these fields mean?


Spectral class: K1
Luminosity Class: V
Apparent visual magnitude: +7.63
Absolute visual magnitude: +6.29
Visual luminosity: 0.27 x Sol
Color indices: B-V= +0.82, U-B= +0.46, R-I= +0.31
Diameter: 0.83 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.52 A.U.s
Angular size of star in sky in CZ: 0.858110 degrees

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