Bonner Durchmusterung -1°3474

light-years

Catalog numbers:
     Gliese (Gl) 710, Henry Draper (HD) 168442, Bonner Durchmusterung (BD) -1°3474, Hipparcos Input Catalog (HIC) 89825, Smithsonian Astrophysical Observatory (SAO) 142227, Vyssotsky McCormick (McC) 63, New Suspected Variable (NSV) 10635
Arity: singular
Points of interest:
     Given this star's radial velocity and small proper motion, it will probably pass within one light-year of our Solar system in about a million years or so.

Right Ascension and Declination: 18h19m50.79s, -1°56'19.5" (epoch 2000.0)
Distance from Sol: 63.0 light-years (19.3 parsecs)
Standard error in distance: 2.686%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 5.44, -62.7, -2.13
Galactic (X,Y,Z) coordinates in ly: 55.4, 29.3, 6.11
Proper motion: 0.014 arcsec/yr (249.7° from north)
Radial Velocity: -13.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -11.3, -7.08, -0.44

What do all these fields mean?


Spectral class: M1
Luminosity Class: V
Apparent visual magnitude: +9.66
Absolute visual magnitude: +8.23
Visual luminosity: 0.044 x Sol
Color indices: B-V= +1.37, U-B= +1.22, R-I= +0.61
Diameter: 0.67 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.21 A.U.s
Angular size of star in sky in CZ: 1.697225 degrees

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