Luyten Double Star 917

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1141, Vyssotsky McCormick (McC) 277, Luyten Double Star (LDS) 917
Arity: binary
Right Ascension and Declination: 11h2m19.45s, +16°30'29" (epoch 2000.0)
Distance from Sol: 47.7 light-years (14.6 parsecs)
Standard error in distance: 9.6433%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -44.3, 11.4, 13.5
Galactic (X,Y,Z) coordinates in ly: -13.5, -16.9, 42.5
Proper motion: 0.196 arcsec/yr (152.0° 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: +9.99
Combined visual luminosity: 0.0088 x Sol
Observed Separation: 273 A.U.s
As seen from A:
     B would appear as magnitude -8.58
As seen from B:
     A would appear as magnitude -8.70


Component A:
Catalog numbers:
     Hipparcos Input Catalog (HIC) 53953, Luyten Two-Tenth (LTT) 12954
Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +11.51
Absolute visual magnitude: +10.69
Visual luminosity: 0.0046 x Sol
Color indices: B-V= +1.48, R-I= +0.85
Comfort Zone (visual): 0.068 A.U.s


Component B:
Catalog numbers:
     Hipparcos Input Catalog (HIC) 53947, Luyten Two-Tenth (LTT) 12955
Right Ascension and Declination: 11h2m18.18s, +16°30'32.8" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -44.3, 11.4, 13.6
Galactic (X,Y,Z) coordinates in ly: -13.5, -16.9, 42.5
Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +11.63
Absolute visual magnitude: +10.81
Visual luminosity: 0.0041 x Sol
Color indices: B-V= +1.48, R-I= +0.88
Comfort Zone (visual): 0.064 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.