Cordoba Durchmusterung -49°14337

light-years

Catalog numbers:
     Gliese (Gl) 4.2, Henry Draper (HD) 142, Cordoba Durchmusterung (CD) -49°14337, Hipparcos Input Catalog (HIC) 522, Smithsonian Astrophysical Observatory (SAO) 214963, Hoffleit Bright Star (HR) 6, Woolley (Wo) 9002
Arity: binary
Right Ascension and Declination: 0h6m19.297s, -49°4'31.13" (epoch 2000.0)
Distance from Sol: 83.6 light-years (25.6 parsecs)
Standard error in distance: 1.6145%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 54.8, 1.51, -63.2
Galactic (X,Y,Z) coordinates in ly: 25.6, -20.7, -76.9
Proper motion: 0.592 arcsec/yr (93.9° from north)
Radial Velocity: 2.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -59.8, -38.1, -12.4

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +3.66
Combined visual luminosity: 2.99 x Sol
Observed Separation: 138 A.U.s
Source for orbit data: Gliese
As seen from A:
     B would appear as magnitude -11.41
As seen from B:
     A would appear as magnitude -17.20


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 1020
Spectral class: G1
Luminosity Class: IV
Apparent visual magnitude: +5.71
Absolute visual magnitude: +3.67
Visual luminosity: 2.98 x Sol
Color indices: B-V= +0.52, U-B= +0.03, R-I= +0.17
Diameter: 1.21 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.73 A.U.s
Angular size of star in sky in CZ: 0.373814 degrees


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 1021
Proper motion: 0.592 arcsec/yr (93.9° from north)
Radial Velocity: 11.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -57.1, -40.3, -20.6
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +11.50
Absolute visual magnitude: +9.46
Visual luminosity: 0.014 x Sol
Diameter: 0.52 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.12 A.U.s
Angular size of star in sky in CZ: 2.311697 degrees

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