Cordoba Durchmusterung -32°8179

light-years

Catalog numbers:
     Gliese (Gl) 432, Henry Draper (HD) 100623, Cordoba Durchmusterung (CD) -32°8179, Hipparcos Input Catalog (HIC) 56452, Smithsonian Astrophysical Observatory (SAO) 202583, Hoffleit Bright Star (HR) 4458
Arity: binary
Right Ascension and Declination: 11h34m29.504s, -32°49'52.84" (epoch 2000.0)
Distance from Sol: 31.11 light-years (9.538 parsecs)
Standard error in distance: 0.7667%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -25.98, 2.904, -16.87
Galactic (X,Y,Z) coordinates in ly: 7.367, -26.67, 14.23
Proper motion: 1.061 arcsec/yr (320.8° from north)
Radial Velocity: -22.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -47.59, 19.84, 12.40

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.08
Combined visual luminosity: 0.321 x Sol
Observed Separation: 133.5 A.U.s
As seen from A:
     B would appear as magnitude -5.84
As seen from B:
     A would appear as magnitude -14.86


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 308
Spectral class: K0
Luminosity Class: V
Apparent visual magnitude: +5.98
Absolute visual magnitude: +6.08
Visual luminosity: 0.321 x Sol
Color indices: B-V= +0.81, U-B= +0.39, R-I= +0.29
Mass: 0.73 x Sol
Diameter: 0.789 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.567 A.U.s
Orbital period in CZ: 182.44 days
Tidal index in CZ: 4.0081
Angular size of star in sky in CZ: 0.742379 degrees


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 309, VB 4
Right Ascension and Declination: 11h32m4s, -32°34'6" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -26.02, 3.188, -16.75
Galactic (X,Y,Z) coordinates in ly: 7.064, -26.73, 14.27
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +15.00
Absolute visual magnitude: +15.10
Visual luminosity: 0.0000792 x Sol
Mass: 0.07 x Sol
Diameter: 0.15 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.00890 A.U.s
Orbital period in CZ: 1.15905 days
Tidal index in CZ: 99306.8
Angular size of star in sky in CZ: 8.985370 degrees

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