Cape Photographic Durchmusterung -41°7862

light-years

Catalog numbers:
     Gliese (Gl) 654.3, Henry Draper (HD) 154590, Cape Photographic Durchmusterung (CPD) -41°7862, Hipparcos Input Catalog (HIC) 83846, Smithsonian Astrophysical Observatory (SAO) 227653, Woolley (Wo) 9585
Arity: singular
Right Ascension and Declination: 17h8m7.301s, -41°43'27" (epoch 2000.0)
Distance from Sol: 73.4 light-years (22.5 parsecs)
Standard error in distance: 3.3072%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -12.3, -53.4, -48.8
Galactic (X,Y,Z) coordinates in ly: 71.0, -18.4, -1.76
Proper motion: 0.385 arcsec/yr (213.2° from north)
Radial Velocity: -19.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -28.8, -34.9, -1.94

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.30
Absolute visual magnitude: +6.54
Visual luminosity: 0.21 x Sol
Color indices: B-V= +1.05, U-B= +0.90, R-I= +0.40
Diameter: 0.77 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.46 A.U.s
Angular size of star in sky in CZ: 0.893510 degrees

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