Cordoba Durchmusterung -44°3045

light-years

Catalog numbers:
     Gliese (Gl) 257, Cordoba Durchmusterung (CD) -44°3045, Luyten Half-Second (LHS) 222, Hipparcos Input Catalog (HIC) 33499, New Suspected Variable (NSV) 3321
Arity: binary
Right Ascension and Declination: 6h57m46.85s, -44°17'27.7" (epoch 2000.0)
Distance from Sol: 26.2 light-years (8.02 parsecs)
Standard error in distance: 2.0745%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -4.67, 18.1, -18.3
Galactic (X,Y,Z) coordinates in ly: -6.68, -24.1, -7.77
Proper motion: 1.134 arcsec/yr (265.0° from north)
Source for proper motion: Gliese

What do all these fields mean?


Component A:
Spectral class: M3
Luminosity Class: V-VI
Apparent visual magnitude: +11.50
Absolute visual magnitude: +11.98
Visual luminosity: 0.0014 x Sol
Mass: 0.16 x Sol
Comfort Zone (visual): 0.038 A.U.s
Orbital period in CZ: 6.63809 days
Tidal index in CZ: 3027.57


Component B:
Spectral class: M3
Luminosity Class: V-VI
Apparent visual magnitude: +11.70
Absolute visual magnitude: +12.18
Visual luminosity: 0.0012 x Sol
Mass: 0.15 x Sol
Comfort Zone (visual): 0.034 A.U.s
Orbital period in CZ: 5.9711 days
Tidal index in CZ: 3741.72

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