WX Ursae Majoris

light-years

Catalog numbers:
     Gliese (Gl) 412, Bonner Durchmusterung (BD) +442051, Hipparcos Input Catalog (HIC) 54211, Smithsonian Astrophysical Observatory (SAO) 43609, Vyssotsky McCormick (McC) 35, FK5 Extension (FK5 Ext) 4979
Arity: binary
Right Ascension and Declination: 11h5m28.524s, +43°31'37.05" (epoch 2000.0)
Distance from Sol: 15.76 light-years (4.832 parsecs)
Standard error in distance: 0.5718%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -11.11, 2.693, 10.85
Galactic (X,Y,Z) coordinates in ly: -6.852, 1.396, 14.12
Proper motion: 4.528 arcsec/yr (282.1° from north)
Radial Velocity: 68.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -123.1, -6.025, 17.64

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +10.31
Combined visual luminosity: 0.00652 x Sol
Observed Separation: 135.3 A.U.s
As seen from A:
     B would appear as magnitude -4.94
As seen from B:
     A would appear as magnitude -10.60


Component A:
Catalog numbers:
     Giclas (G) 176-11, Luyten Half-Second (LHS) 38, Luyten Two-Tenth (LTT) 12976
Spectral class: M1n
Luminosity Class: V
Apparent visual magnitude: +8.74
Absolute visual magnitude: +10.32
Visual luminosity: 0.00649 x Sol
Color indices: B-V= +1.54, U-B= +1.18, R-I= +0.81
Mass: 0.25 x Sol
Diameter: 0.358 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.0806 A.U.s
Orbital period in CZ: 16.7022 days
Tidal index in CZ: 478.226
Angular size of star in sky in CZ: 2.371515 degrees


Component B:
Proper names: WX Ursae Majoris
Catalog numbers:
     Giclas (G) 176-12, Luyten Half-Second (LHS) 39, Luyten Two-Tenth (LTT) 12977
Right Ascension and Declination: 11h3m2s, +43°46'42" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -11.03, 2.800, 10.90
Galactic (X,Y,Z) coordinates in ly: -6.974, 1.423, 14.06
Proper motion: 4.531 arcsec/yr (281.9° from north)
Radial Velocity: 68.8 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -123.3, -5.599, 16.50
Spectral class: M5.5
Luminosity Class: V
Apparent visual magnitude: +14.40
Absolute visual magnitude: +15.98
Visual luminosity: 0.0000353 x Sol
Variable type: UV Ceti flare star (eruptive variable)
Color indices: B-V= +2.09, R-I= +1.80
Mass: 0.06 x Sol
Diameter: 0.13 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.00594 A.U.s
Orbital period in CZ: 16.3982 hours
Tidal index in CZ: 285767
Angular size of star in sky in CZ: 11.660425 degrees

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