Bonner Durchmusterung -1°3500

light-years

Catalog numbers:
     Gliese (Gl) 715, Henry Draper (HD) 170493, Bonner Durchmusterung (BD) -1°3500, Hipparcos Input Catalog (HIC) 90656, Smithsonian Astrophysical Observatory (SAO) 142350, UGPMF 456, AGK3 Reference (AGK3R) 16479
Arity: singular
Right Ascension and Declination: 18h29m52.402s, -1°49'5.27" (epoch 2000.0)
Distance from Sol: 61.2 light-years (18.8 parsecs)
Standard error in distance: 1.9319%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 7.95, -60.6, -1.94
Galactic (X,Y,Z) coordinates in ly: 53.3, 29.8, 3.63
Proper motion: 0.256 arcsec/yr (139.5° from north)
Radial Velocity: -54.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -42.1, -33.2, -24.3

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.04
Absolute visual magnitude: +6.67
Visual luminosity: 0.19 x Sol
Color indices: B-V= +1.10, U-B= +1.06, R-I= +0.38
Diameter: 0.79 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.43 A.U.s
Angular size of star in sky in CZ: 0.975865 degrees

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