Cordoba Durchmusterung -23°17748

light-years

Catalog numbers:
     Gliese (Gl) 889, Henry Draper (HD) 218294, Cordoba Durchmusterung (CD) -23°17748, Hipparcos Input Catalog (HIC) 114156, Smithsonian Astrophysical Observatory (SAO) 191663, Vyssotsky McCormick (McC) 341
Arity: binary
Right Ascension and Declination: 23h7m7.026s, -23°9'35.1" (epoch 2000.0)
Distance from Sol: 68.9 light-years (21.1 parsecs)
Standard error in distance: 3.818%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 61.6, -14.5, -27.1
Galactic (X,Y,Z) coordinates in ly: 21.6, 16.7, -63.2
Proper motion: 0.34 arcsec/yr (152.5° from north)
Radial Velocity: 19 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 4.19, -28.1, -26.7

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +7.97
Combined visual luminosity: 0.056 x Sol
Observed Separation: 3252 A.U.s
As seen from A:
     B would appear as magnitude -1.98
As seen from B:
     A would appear as magnitude -6.01


Component A:
Catalog numbers:
     Giclas (G) 275-1, Luyten Two-Tenth (LTT) 9360
Spectral class: K5-M0
Luminosity Class: V
Apparent visual magnitude: +9.62
Absolute visual magnitude: +8.00
Visual luminosity: 0.055 x Sol
Color indices: B-V= +1.30, U-B= +1.38, R-I= +0.54
Diameter: 0.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.23 A.U.s
Angular size of star in sky in CZ: 1.544434 degrees


Component B:
Catalog numbers:
     Giclas (G) 275-2, Luyten Two-Tenth (LTT) 9361, Luyten Palomar (LP) 877-61
Right Ascension and Declination: 23h4m34s, -23°23'48" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: 61.4, -15.1, -27.3
Galactic (X,Y,Z) coordinates in ly: 22.3, 16.7, -63.0
Proper motion: 0.303 arcsec/yr (149.0° from north)
Radial Velocity: 19 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 2.72, -24.2, -26.2
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +13.65
Absolute visual magnitude: +12.03
Visual luminosity: 0.0013 x Sol
Color indices: B-V= +1.65, R-I= +1.16
Comfort Zone (visual): 0.037 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.