Psi(5) Aurigae

light-years
Proper names: Psi(5) Aurigae, 56 Aurigae, Psi Aurigae
Catalog numbers:
     Gliese (Gl) 245, Henry Draper (HD) 48682, Bonner Durchmusterung (BD) +43°1595, Hipparcos Input Catalog (HIC) 32480, Smithsonian Astrophysical Observatory (SAO) 41330, Fifth Fundamental Catalogue (FK5) 255, Hoffleit Bright Star (HR) 2483
Age: 5700 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Heavy element abundance: 141% of Sol
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 6h46m44.336s, +43°34'38.77" (epoch 2000.0)
Distance from Sol: 53.9 light-years (16.5 parsecs)
Standard error in distance: 1.1911%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -7.90, 38.2, 37.1
Galactic (X,Y,Z) coordinates in ly: -50.8, 6.54, 16.7
Proper motion: 0.164 arcsec/yr (359.0° from north)
Radial Velocity: -23.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 25.4, 8.89, -3.27

What do all these fields mean?


Spectral class: G0
Luminosity Class: V
Apparent visual magnitude: +5.20
Absolute visual magnitude: +4.11
Visual luminosity: 1.98 x Sol
Color indices: B-V= +0.56, U-B= +0.05
Mass: 1.15 x Sol
Diameter: 1.03 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.41 A.U.s
Orbital period in CZ: 1.55376 years
Tidal index in CZ: 0.414222
Angular size of star in sky in CZ: 0.390691 degrees

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