Bonner Durchmusterung +5°3993

light-years

Catalog numbers:
     Gliese (Gl) 740, Henry Draper (HD) 176029, Bonner Durchmusterung (BD) +5°3993, Luyten Half-Second (LHS) 470, Hipparcos Input Catalog (HIC) 93101, Smithsonian Astrophysical Observatory (SAO) 124104, Vyssotsky McCormick (McC) 190
Arity: singular
Right Ascension and Declination: 18h58m0.146s, +5°54'28.62" (epoch 2000.0)
Distance from Sol: 36.2 light-years (11.1 parsecs)
Standard error in distance: 1.596%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 9.02, -34.9, 3.73
Galactic (X,Y,Z) coordinates in ly: 28.0, 22.9, 0.46
Proper motion: 1.245 arcsec/yr (189.6° from north)
Radial Velocity: 10.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 47.7, -41.5, -20.0

What do all these fields mean?


Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +9.22
Absolute visual magnitude: +8.99
Visual luminosity: 0.022 x Sol
Color indices: B-V= +1.46, U-B= +1.17, R-I= +0.76
Diameter: 0.64 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.15 A.U.s
Angular size of star in sky in CZ: 2.298145 degrees

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