Bonner Durchmusterung +36°2500

light-years

Catalog numbers:
     Gliese (Gl) 554, Henry Draper (HD) 127506, Bonner Durchmusterung (BD) +36°2500, Giclas (G) 178-31, Luyten Half-Second (LHS) 2931, Hipparcos Input Catalog (HIC) 70950, Smithsonian Astrophysical Observatory (SAO) 64191, AGK3 Reference (AGK3R) 12972
Arity: singular
Right Ascension and Declination: 14h30m44.957s, +35°27'12.97" (epoch 2000.0)
Distance from Sol: 71.7 light-years (22.0 parsecs)
Standard error in distance: 2.2155%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -46.3, -35.7, 41.6
Galactic (X,Y,Z) coordinates in ly: 14.2, 24.3, 66.0
Proper motion: 0.525 arcsec/yr (290.7° from north)
Radial Velocity: -12 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -49.8, -24.7, 6.74

What do all these fields mean?


Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.70
Absolute visual magnitude: +6.99
Visual luminosity: 0.14 x Sol
Color indices: B-V= +1.04, U-B= +0.91, R-I= +0.40
Diameter: 0.74 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.37 A.U.s
Angular size of star in sky in CZ: 1.056573 degrees

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