Epsilon Serpentis

light-years
Proper names: Epsilon Serpentis, 37 Serpentis
Catalog numbers:
     Henry Draper (HD) 141795, Bonner Durchmusterung (BD) +4°3069, Hipparcos Input Catalog (HIC) 77622, Smithsonian Astrophysical Observatory (SAO) 121218, Fifth Fundamental Catalogue (FK5) 588, Hoffleit Bright Star (HR) 5892
Heavy element abundance: 309% of Sol
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 15h50m48.97s, +4°28'39.84" (epoch 2000.0)
Distance from Sol: 70.3 light-years (21.6 parsecs)
Standard error in distance: 1.5701%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -37.5, -59.3, 5.49
Galactic (X,Y,Z) coordinates in ly: 51.6, 12.3, 46.2
Proper motion: 0.14 arcsec/yr (64.6° from north)
Radial Velocity: -9.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -4.71, 11.4, -11.6

What do all these fields mean?


Spectral class: A2m
Luminosity Class: V
Apparent visual magnitude: +3.71
Absolute visual magnitude: +2.04
Visual luminosity: 13.3 x Sol
Color indices: B-V= +0.15, U-B= +0.11, R-I= +0.06
Diameter: 1.85 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 3.65 A.U.s
Angular size of star in sky in CZ: 0.270885 degrees

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