Zeta Serpentis

light-years
Proper names: Zeta Serpentis, 57 Serpentis
Catalog numbers:
     Gliese (Gl) 699.2, Henry Draper (HD) 164259, Bonner Durchmusterung (BD) -3°4217, Hipparcos Input Catalog (HIC) 88175, Smithsonian Astrophysical Observatory (SAO) 142025, Hoffleit Bright Star (HR) 6710, Woolley (Wo) 9611
Arity: singular
Right Ascension and Declination: 18h0m29.021s, -3°41'25.17" (epoch 2000.0)
Distance from Sol: 75.7 light-years (23.2 parsecs)
Standard error in distance: 1.71%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 0.16, -75.5, -4.87
Galactic (X,Y,Z) coordinates in ly: 68.2, 30.5, 11.8
Proper motion: 0.16 arcsec/yr (107.5° from north)
Radial Velocity: -42.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -37.6, -13.1, -23.8

What do all these fields mean?


Spectral class: F3
Luminosity Class: V
Apparent visual magnitude: +4.62
Absolute visual magnitude: +2.79
Visual luminosity: 6.65 x Sol
Color indices: B-V= +0.38, U-B= +0.00, R-I= +0.22
Diameter: 1.30 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 2.58 A.U.s
Angular size of star in sky in CZ: 0.268498 degrees

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