Luyten 1617-7

light-years

Catalog numbers:
     Giclas (G) 146-43, Luyten (L) 1617-7
Arity: binary
Right Ascension and Declination: 10h31m32s, +46°33'48" (epoch 1950.0)
Distance from Sol: 67 light-years (20 parsecs)
Standard error in distance: 16.9492%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -42, 17, 48
Galactic (X,Y,Z) coordinates in ly: -36, 7.3, 56
Proper motion: 0.411 arcsec/yr (257.0° 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: +11.47
Combined visual luminosity: 0.002 x Sol
Observed Separation: 949 A.U.s
As seen from A:
     B would appear as magnitude -2.73
As seen from B:
     A would appear as magnitude -5.10


Component A:
Catalog numbers:
     Luyten Palomar (LP) 167-64
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +13.13
Absolute visual magnitude: +11.58
Visual luminosity: 0.002 x Sol
Color indices: R-I= +1.14
Comfort Zone (visual): 0.05 A.U.s


Component B:
Catalog numbers:
     Luyten Palomar (LP) 167-73
Right Ascension and Declination: 10h31m28s, +46°34'0" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -42, 17, 48
Galactic (X,Y,Z) coordinates in ly: -36, 7.3, 56
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +15.50
Absolute visual magnitude: +13.95
Visual luminosity: 0.0002 x Sol
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.