c Ursae Majoris

light-years
Proper names: 16 Ursae Majoris, c Ursae Majoris
Catalog numbers:
     Gliese (Gl) 337.1, Henry Draper (HD) 79028, Bonner Durchmusterung (BD) +62°1058, Hipparcos Input Catalog (HIC) 45333, Smithsonian Astrophysical Observatory (SAO) 14819, FK4 Supplement (FK4 Sup) 2730, Hoffleit Bright Star (HR) 3648, Woolley (Wo) 9290
Age: 7900 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 76% of Sol
Source for heavy element abundance: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Arity: singular
Right Ascension and Declination: 9h14m20.552s, +61°25'24" (epoch 2000.0)
Distance from Sol: 63.8 light-years (19.6 parsecs)
Standard error in distance: 1.3889%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -22.9, 20.2, 56.0
Galactic (X,Y,Z) coordinates in ly: -43.2, 21.3, 41.8
Proper motion: 0.033 arcsec/yr (191.3° from north)
Radial Velocity: -14.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 8.77, -7.72, -9.28

What do all these fields mean?


NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: F9
Luminosity Class: V
Apparent visual magnitude: +5.17
Absolute visual magnitude: +3.71
Visual luminosity: 2.86 x Sol
Color indices: B-V= +0.58, U-B= +0.10
Diameter: 1.57 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.69 A.U.s
Angular size of star in sky in CZ: 0.495332 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.