Cordoba Durchmusterung -50°8092

light-years

Catalog numbers:
     Gliese (Gl) 531, Henry Draper (HD) 120780, Cordoba Durchmusterung (CD) -50°8092, Luyten Half-Second (LHS) 2817, Hipparcos Input Catalog (HIC) 67742, Smithsonian Astrophysical Observatory (SAO) 241249
Arity: singular
Right Ascension and Declination: 13h52m35.888s, -50°55'18.29" (epoch 2000.0)
Distance from Sol: 53.6 light-years (16.4 parsecs)
Standard error in distance: 1.537%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -29.8, -15.9, -41.6
Galactic (X,Y,Z) coordinates in ly: 36.0, -38.5, 9.70
Proper motion: 0.595 arcsec/yr (265.4° from north)
Radial Velocity: -25 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -51.1, -12.2, 3.17

What do all these fields mean?


Spectral class: K1
Luminosity Class: V
Apparent visual magnitude: +7.37
Absolute visual magnitude: +6.29
Visual luminosity: 0.26 x Sol
Color indices: B-V= +0.90, U-B= +0.56, R-I= +0.35
Diameter: 0.78 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.51 A.U.s
Angular size of star in sky in CZ: 0.808832 degrees

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