Luyten 903-4

light-years

Catalog numbers:
     Luyten (L) 903-4
Arity: binary
Right Ascension and Declination: 12h27m22s, -5°10'36" (epoch 1950.0)
Distance from Sol: 54 light-years (17 parsecs)
Standard error in distance: 10.4478%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -54, -6.4, -4.9
Galactic (X,Y,Z) coordinates in ly: 12, -27, 46
Proper motion: 0.605 arcsec/yr (239.2° 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: +11.59
Combined visual luminosity: 0.002 x Sol
Observed Separation: 133 A.U.s
As seen from A:
     B would appear as magnitude -7.81
As seen from B:
     A would appear as magnitude -9.06


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 2567, Luyten Two-Tenth (LTT) 4740, Luyten Palomar (LP) 675-76
Spectral class: M3.5
Luminosity Class: V-VI
Apparent visual magnitude: +13.00
Absolute visual magnitude: +11.89
Visual luminosity: 0.002 x Sol
Color indices: R-I= +1.20
Comfort Zone (visual): 0.04 A.U.s


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 2568, Luyten Two-Tenth (LTT) 4741, Luyten Palomar (LP) 675-77
Spectral class: M3.5
Luminosity Class: V-VI
Apparent visual magnitude: +14.25
Absolute visual magnitude: +13.14
Visual luminosity: 0.0005 x Sol
Color indices: R-I= +1.32
Comfort Zone (visual): 0.02 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.