Giclas 70-43

light-years

Catalog numbers:
     Giclas (G) 70-43, Luyten Two-Tenth (LTT) 10438
Arity: binary
Right Ascension and Declination: 1h9m19s, +4°39'36" (epoch 1950.0)
Distance from Sol: 50.5 light-years (15.5 parsecs)
Standard error in distance: 4.0119%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 48.0, 15.0, 4.10
Galactic (X,Y,Z) coordinates in ly: -18.3, 20.0, -42.6
Proper motion: 0.623 arcsec/yr (146.4° from north)
Source for proper motion: Gliese

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +11.58
Combined visual luminosity: 0.0020 x Sol
Observed Separation: 983 A.U.s
As seen from A:
     B would appear as magnitude -3.65
As seen from B:
     A would appear as magnitude -4.67


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 1212
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +12.89
Absolute visual magnitude: +11.94
Visual luminosity: 0.0015 x Sol
Color indices: B-V= +1.62, R-I= +1.14
Comfort Zone (visual): 0.038 A.U.s


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 1213
Right Ascension and Declination: 1h9m21s, +4°38'36" (epoch 1950.0)
Distance from Sol: 50.5 light-years (15.5 parsecs)
Standard error in distance: 4.0119%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 48.0, 15.0, 4.09
Galactic (X,Y,Z) coordinates in ly: -18.3, 20.0, -42.6
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +13.91
Absolute visual magnitude: +12.96
Visual luminosity: 0.00057 x Sol
Color indices: B-V= +1.70, R-I= +1.24
Comfort Zone (visual): 0.024 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.