Theta Centauri

light-years
Proper names: Theta Centauri, 5 Centauri, Menkent
Catalog numbers:
     Gliese (Gl) 539, Henry Draper (HD) 123139, Cordoba Durchmusterung (CD) -35°9260, Luyten Half-Second (LHS) 2858, Hipparcos Input Catalog (HIC) 68933, Smithsonian Astrophysical Observatory (SAO) 205188, Fifth Fundamental Catalogue (FK5) 520, Hoffleit Bright Star (HR) 5288
Heavy element abundance: 155% of Sol
Standard error in heavy element abundance: 29%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 14h6m40.951s, -36°22'12.03" (epoch 2000.0)
Distance from Sol: 60.9 light-years (18.7 parsecs)
Standard error in distance: 1.4546%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -41.8, -25.8, -36.1
Galactic (X,Y,Z) coordinates in ly: 42.8, -35.9, 24.5
Proper motion: 0.736 arcsec/yr (224.9° from north)
Radial Velocity: 1.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -27.8, -53.0, -25.9

What do all these fields mean?


Spectral class: K0-
Luminosity Class: IIIb
Apparent visual magnitude: +2.06
Absolute visual magnitude: +0.70
Visual luminosity: 45.8 x Sol
Color indices: B-V= +1.01, U-B= +0.87, R-I= +0.36
Diameter: 12.9 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 6.77 A.U.s
Angular size of star in sky in CZ: 1.012190 degrees

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