61 Virginis

light-years
Proper names: 61 Virginis
Catalog numbers:
     Gliese (Gl) 506, Henry Draper (HD) 115617, Bonner Durchmusterung (BD) -17°3813, Luyten Half-Second (LHS) 349, Hipparcos Input Catalog (HIC) 64924, Smithsonian Astrophysical Observatory (SAO) 157844, Fifth Fundamental Catalogue (FK5) 1345, Hoffleit Bright Star (HR) 5019
Age: 14100 million years — probably incorrect, as this is much too old for such a high heavy-element abundance
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 150% of Sol
Source for heavy element abundance: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Arity: singular
Right Ascension and Declination: 13h18m24.314s, -18°18'40.57" (epoch 2000.0)
Distance from Sol: 27.81 light-years (8.525 parsecs)
Standard error in distance: 0.6016%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -24.87, -8.856, -8.736
Galactic (X,Y,Z) coordinates in ly: 13.62, -14.77, 19.22
Proper motion: 1.515 arcsec/yr (225.1° from north)
Radial Velocity: -8.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -23.79, -47.41, -31.72

What do all these fields mean?


Spectral class: G6
Luminosity Class: V
Apparent visual magnitude: +4.74
Absolute visual magnitude: +5.09
Visual luminosity: 0.805 x Sol
Color indices: B-V= +0.71, U-B= +0.26, R-I= +0.23
Mass: 0.96 x Sol
Diameter: 1.063 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.897 A.U.s
Orbital period in CZ: 316.814 days
Tidal index in CZ: 1.32914
Angular size of star in sky in CZ: 0.631515 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.