Bonner Durchmusterung +21°1731

light-years

Catalog numbers:
     Henry Draper (HD) 65430, Bonner Durchmusterung (BD) +21°1731, Luyten Half-Second (LHS) 1966, Hipparcos Input Catalog (HIC) 39064, Smithsonian Astrophysical Observatory (SAO) 79846, Luyten Two-Tenth (LTT) 12105
Arity: singular
Right Ascension and Declination: 7h59m33.937s, +20°50'37.52" (epoch 2000.0)
Distance from Sol: 75.5 light-years (23.1 parsecs)
Standard error in distance: 2.1734%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -35.2, 61.2, 26.9
Galactic (X,Y,Z) coordinates in ly: -64.0, -24.9, 31.3
Proper motion: 0.588 arcsec/yr (161.7° from north)
Radial Velocity: -28.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 45.8, -51.3, -15.0

What do all these fields mean?


Spectral class: K0
Luminosity Class: V
Apparent visual magnitude: +7.71
Absolute visual magnitude: +5.89
Visual luminosity: 0.38 x Sol
Color indices: B-V= +0.82, U-B= +0.48, R-I= +0.28
Comfort Zone (visual): 0.62 A.U.s

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