Bonner Durchmusterung +1°2920

light-years

Catalog numbers:
     Gliese (Gl) 547, Henry Draper (HD) 126053, Bonner Durchmusterung (BD) +1°2920, Luyten Half-Second (LHS) 2907, Hipparcos Input Catalog (HIC) 70319, Smithsonian Astrophysical Observatory (SAO) 120424, Hoffleit Bright Star (HR) 5384
Age: 5700 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: singular
Right Ascension and Declination: 14h23m15.301s, +1°14'29.79" (epoch 2000.0)
Distance from Sol: 57.4 light-years (17.6 parsecs)
Standard error in distance: 1.7974%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -46.5, -33.6, 1.24
Galactic (X,Y,Z) coordinates in ly: 31.8, -6.88, 47.3
Proper motion: 0.528 arcsec/yr (155.1° from north)
Radial Velocity: -18.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 21.7, -15.5, -39.8

What do all these fields mean?


Spectral class: G1
Luminosity Class: V
Apparent visual magnitude: +6.27
Absolute visual magnitude: +5.04
Visual luminosity: 0.84 x Sol
Color indices: B-V= +0.63, U-B= +0.09, R-I= +0.23
Mass: 0.94 x Sol
Diameter: 0.93 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.92 A.U.s
Orbital period in CZ: 330.272 days
Tidal index in CZ: 1.22303
Angular size of star in sky in CZ: 0.541257 degrees

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