Bonner Durchmusterung +35°2436

light-years

Catalog numbers:
     Gliese (Gl) 507, Bonner Durchmusterung (BD) +35°2436, Hipparcos Input Catalog (HIC) 65011, Smithsonian Astrophysical Observatory (SAO) 63473, Vyssotsky McCormick (McC) 46
Arity: binary
Right Ascension and Declination: 13h19m33.67s, +35°6'36.1" (epoch 2000.0)
Distance from Sol: 42.9 light-years (13.2 parsecs)
Standard error in distance: 4.1756%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -33.0, -12.0, 24.7
Galactic (X,Y,Z) coordinates in ly: 0.71, 7.49, 42.3
Proper motion: 0.873 arcsec/yr (154.6° from north)
Radial Velocity: -4.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 48.2, -25.8, -1.20

What do all these fields mean?


Component A:
Catalog numbers:
     Giclas (G) 164-64, Luyten Half-Second (LHS) 2716
Spectral class: M1.5
Luminosity Class: V
Apparent visual magnitude: +9.51
Absolute visual magnitude: +8.91
Visual luminosity: 0.024 x Sol
Color indices: B-V= +1.47, U-B= +1.20, R-I= +0.81
Mass: 0.3 x Sol
Diameter: 0.57 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.15 A.U.s
Orbital period in CZ: 40.2803 days
Tidal index in CZ: 82.2234
Angular size of star in sky in CZ: 1.973864 degrees


Component B:
Catalog numbers:
     Giclas (G) 164-65, Luyten Half-Second (LHS) 2717
Proper motion: 0.873 arcsec/yr (154.6° from north)
Radial Velocity: -8.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 48.2, -26.4, -4.75
Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +12.10
Absolute visual magnitude: +11.50
Visual luminosity: 0.0022 x Sol
Color indices: B-V= +1.58, U-B= +1.20, R-I= +1.08
Mass: 0.2 x Sol
Diameter: 0.33 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.047 A.U.s
Orbital period in CZ: 8.24328 days
Tidal index in CZ: 1963.27
Angular size of star in sky in CZ: 3.766879 degrees

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