Luyten 758-108

light-years

Catalog numbers:
     Hipparcos Input Catalog (HIC) 59406, Luyten (L) 758-108, Luyten Two-Tenth (LTT) 4562
Arity: binary
Right Ascension and Declination: 12h11m11.778s, -19°57'37.68" (epoch 2000.0)
Distance from Sol: 41.7 light-years (12.8 parsecs)
Standard error in distance: 3.459%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -39.2, -1.92, -14.2
Galactic (X,Y,Z) coordinates in ly: 11.2, -29.1, 27.8
Proper motion: 0.255 arcsec/yr (231.0° 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: +10.76
Combined visual luminosity: 0.0043 x Sol
Observed Separation: 1088 A.U.s
As seen from A:
     B would appear as magnitude -4.30
As seen from B:
     A would appear as magnitude -5.25


Component A:
Catalog numbers:
     Luyten Palomar (LP) 794-30
Spectral class: M2
Luminosity Class: V-VI
Apparent visual magnitude: +11.67
Absolute visual magnitude: +11.14
Visual luminosity: 0.0031 x Sol
Color indices: B-V= +1.59, R-I= +1.08
Comfort Zone (visual): 0.055 A.U.s


Component B:
Catalog numbers:
     Luyten Palomar (LP) 794-31
Right Ascension and Declination: 12h8m43s, -19°41'30" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -39.3, -1.49, -14.1
Galactic (X,Y,Z) coordinates in ly: 10.7, -29.1, 27.9
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +12.62
Absolute visual magnitude: +12.08
Visual luminosity: 0.0013 x Sol
Color indices: B-V= +1.68, R-I= +1.16
Comfort Zone (visual): 0.036 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.