Bonner Durchmusterung +0°2989

light-years

Catalog numbers:
     Gliese (Gl) 488, Henry Draper (HD) 111631, Bonner Durchmusterung (BD) +0°2989, Hipparcos Input Catalog (HIC) 62687, Smithsonian Astrophysical Observatory (SAO) 138992, Vyssotsky McCormick (McC) 675
Heavy element abundance: 126% of Sol
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 12h50m43.544s, +0°46'5.35" (epoch 2000.0)
Distance from Sol: 35.2 light-years (10.8 parsecs)
Standard error in distance: 1.0244%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -34.3, -7.72, 0.47
Galactic (X,Y,Z) coordinates in ly: 8.81, -13.1, 31.4
Proper motion: 0.402 arcsec/yr (185.6° from north)
Radial Velocity: 6.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 9.81, -18.7, -3.70

What do all these fields mean?


Spectral class: M0.5e
Luminosity Class: V
Apparent visual magnitude: +8.49
Absolute visual magnitude: +8.33
Visual luminosity: 0.041 x Sol
Color indices: B-V= +1.40, U-B= +1.26, R-I= +0.66
Diameter: 0.81 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.20 A.U.s
Angular size of star in sky in CZ: 2.144150 degrees

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