Luyten 961-1

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1103, Giclas (G) 112-50, Luyten (L) 961-1
Arity: binary
Right Ascension and Declination: 7h49m20s, +0°8'6" (epoch 1950.0)
Distance from Sol: 28.7 light-years (8.79 parsecs)
Standard error in distance: 2.8181%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -13.2, 25.5, 0.068
Galactic (X,Y,Z) coordinates in ly: -21.4, -17.9, 6.65
Proper motion: 0.766 arcsec/yr (160.6° from north)
Radial Velocity: 52 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -19.4, -57.4, 7.32

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +13.54
Combined visual luminosity: 0.00033 x Sol
Observed Separation: 26.4 A.U.s
As seen from A:
     B would appear as magnitude -9.19
As seen from B:
     A would appear as magnitude -10.69


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 1951, Luyten Palomar (LP) 603-1
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +13.50
Absolute visual magnitude: +13.78
Visual luminosity: 0.00027 x Sol
Mass: 0.095 x Sol
Comfort Zone (visual): 0.016 A.U.s
Orbital period in CZ: 2.47961 days
Tidal index in CZ: 21697.7


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 1952, Luyten Palomar (LP) 603-2
Right Ascension and Declination: 7h49m21s, +0°8'12" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -13.2, 25.5, 0.068
Galactic (X,Y,Z) coordinates in ly: -21.4, -17.9, 6.65
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +15.00
Absolute visual magnitude: +15.28
Visual luminosity: 0.000067 x Sol
Mass: 0.064 x Sol
Comfort Zone (visual): 0.0082 A.U.s
Orbital period in CZ: 1.07185 days
Tidal index in CZ: 116122

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.