Cordoba Durchmusterung -39°4247

Catalog numbers:
Gliese (Gl) 304, Henry Draper (HD) 70642, Cordoba Durchmusterung (CD) -39°4247, Hipparcos Input Catalog (HIC) 40952, Smithsonian Astrophysical Observatory (SAO) 199126
Arity: singular
Right Ascension and Declination: 8h21m28.122s, -39°42'19.46" (epoch 2000.0)
Distance from Sol: 93.8 light-years (28.8 parsecs)
Standard error in distance: 1.6964%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -41.8, 58.9, -59.9
Galactic (X,Y,Z) coordinates in ly: -19.6, -91.7, -2.42
Proper motion: 0.308 arcsec/yr (317.5° from north)
Radial Velocity: 48.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -50.7, -38.2, -6.55

What do all these fields mean?

Spectral class: G6
Luminosity Class: V
Apparent visual magnitude: +7.17
Absolute visual magnitude: +4.88
Visual luminosity: 0.98 x Sol
Color indices: B-V= +0.71, U-B= +0.29, R-I= +0.35
Diameter: 0.84 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.99 A.U.s
Angular size of star in sky in CZ: 0.453421 degrees
Detected companions: 1
Companion b:
     Mass: 2 x Jupiter, minimum
     Source for mass: Liverpool John Moores University
     Period: 6.108 years
     Semimajor Axis: 3.3 A.U.s
     Eccentricity: 0.1
     Periastron distance: 2.97 A.U.s
     Apastron distance: 3.63 A.U.s
     Source for orbit data: Liverpool John Moores University

Data for this star system were most recently updated on 6-July-2003.