Ross 486

light-years

Catalog numbers:
     Gliese (Gl) 512, Ross 486
Arity: binary
Right Ascension and Declination: 13h25m46s, -2°5'36" (epoch 1950.0)
Distance from Sol: 39 light-years (12 parsecs)
Standard error in distance: 11.7895%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -36, -14, -1.4
Galactic (X,Y,Z) coordinates in ly: 16, -12, 33
Proper motion: 0.482 arcsec/yr (158.9° from north)
Radial Velocity: -41.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 3.1, 0.6, -50

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +10.82
Combined visual luminosity: 0.004 x Sol
Observed Separation: 107 A.U.s
As seen from A:
     B would appear as magnitude -8.11
As seen from B:
     A would appear as magnitude -10.48


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 5249
Spectral class: M4
Luminosity Class: V
Apparent visual magnitude: +11.32
Absolute visual magnitude: +10.94
Visual luminosity: 0.004 x Sol
Variable type: VAR
Color indices: B-V= +1.52, R-I= +1.11
Mass: 0.2 x Sol
Diameter: 0.43 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.06 A.U.s
Orbital period in CZ: 12.1933 days
Tidal index in CZ: 897.306
Angular size of star in sky in CZ: 3.780852 degrees


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 5250
Spectral class: M4
Luminosity Class: V
Apparent visual magnitude: +13.69
Absolute visual magnitude: +13.31
Visual luminosity: 0.0004 x Sol
Color indices: B-V= +1.68, R-I= +1.32
Mass: 0.1 x Sol
Diameter: 0.21 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.02 A.U.s
Orbital period in CZ: 3.35429 days
Tidal index in CZ: 11857.2
Angular size of star in sky in CZ: 5.500014 degrees

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