Cape Photographic Durchmusterung -58°7954

light-years

Catalog numbers:
     Gliese (Gl) 857, Henry Draper (HD) 212330, Cape Photographic Durchmusterung (CPD) -58°7954, Hipparcos Input Catalog (HIC) 110649, Smithsonian Astrophysical Observatory (SAO) 247441, Hoffleit Bright Star (HR) 8531
Heavy element abundance: 78% of Sol
Standard error in heavy element abundance: 14%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 22h24m56.19s, -57°47'50.5" (epoch 2000.0)
Distance from Sol: 66.8 light-years (20.5 parsecs)
Standard error in distance: 1.2343%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 32.6, -14.4, -56.5
Galactic (X,Y,Z) coordinates in ly: 37.7, -19.6, -51.6
Proper motion: 0.365 arcsec/yr (158.3° from north)
Radial Velocity: 7.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -6.03, -35.8, -0.93

What do all these fields mean?


Spectral class: G4
Luminosity Class: V?
Apparent visual magnitude: +5.31
Absolute visual magnitude: +3.75
Visual luminosity: 2.75 x Sol
Color indices: B-V= +0.67, U-B= +0.13, R-I= +0.24
Diameter: 1.05 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.66 A.U.s
Angular size of star in sky in CZ: 0.337680 degrees

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