Epsilon(2) Arae

light-years
Proper names: Epsilon(2) Arae, Epsilon Arae
Catalog numbers:
     Henry Draper (HD) 153580, Cape Photographic Durchmusterung (CPD) -53°8316, Hipparcos Input Catalog (HIC) 83431, Smithsonian Astrophysical Observatory (SAO) 244388, Hoffleit Bright Star (HR) 6314
Arity: singular
Right Ascension and Declination: 17h3m8.76s, -53°14'12.8" (epoch 2000.0)
Distance from Sol: 85.9 light-years (26.3 parsecs)
Standard error in distance: 2.1644%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -12.6, -49.8, -68.8
Galactic (X,Y,Z) coordinates in ly: 77.6, -35.0, -11.3
Proper motion: 0.15 arcsec/yr (178.6° from north)
Radial Velocity: 7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -1.13, -15.7, -12.4

What do all these fields mean?


Spectral class: F6
Luminosity Class: V
Apparent visual magnitude: +5.29
Absolute visual magnitude: +3.19
Visual luminosity: 4.63 x Sol
Color indices: B-V= +0.50, U-B= +0.01
Comfort Zone (visual): 2.15 A.U.s

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