Xi Geminorum

light-years
Proper names: Xi Geminorum, 31 Geminorum
Catalog numbers:
     Gliese (Gl) 242, Henry Draper (HD) 48737, Bonner Durchmusterung (BD) +13°1396, Hipparcos Input Catalog (HIC) 32362, Smithsonian Astrophysical Observatory (SAO) 96074, Fifth Fundamental Catalogue (FK5) 256, Hoffleit Bright Star (HR) 2484, New Suspected Variable (NSV) 3193
Arity: singular
Right Ascension and Declination: 6h45m17.362s, +12°53'44.02" (epoch 2000.0)
Distance from Sol: 57.2 light-years (17.5 parsecs)
Standard error in distance: 1.4347%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -10.9, 54.7, 12.8
Galactic (X,Y,Z) coordinates in ly: -53.2, -20.5, 5.07
Proper motion: 0.225 arcsec/yr (210.8° from north)
Radial Velocity: 30 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -25.6, -20.6, -13.1

What do all these fields mean?


Spectral class: F5
Luminosity Class: III
Apparent visual magnitude: +3.36
Absolute visual magnitude: +2.14
Visual luminosity: 12.1 x Sol
Color indices: B-V= +0.43, U-B= +0.06
Diameter: 3.77 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 3.48 A.U.s
Angular size of star in sky in CZ: 0.576669 degrees

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