36 Ursae Majoris

light-years
Proper names: 36 Ursae Majoris
Catalog numbers:
     Gliese (Gl) 395, Henry Draper (HD) 90839, Bonner Durchmusterung (BD) +56°1459, Hipparcos Input Catalog (HIC) 51459, Smithsonian Astrophysical Observatory (SAO) 27670, Fifth Fundamental Catalogue (FK5) 394, Hoffleit Bright Star (HR) 4112
Age: 1600 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Heavy element abundance: 59% of Sol
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: possible spectroscopic binary
Right Ascension and Declination: 10h30m37.585s, +55°58'50.01" (epoch 2000.0)
Distance from Sol: 41.91 light-years (12.85 parsecs)
Standard error in distance: 0.8283%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -21.69, 8.914, 34.74
Galactic (X,Y,Z) coordinates in ly: -23.12, 11.16, 33.12
Proper motion: 0.181 arcsec/yr (258.8° from north)
Radial Velocity: 8.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -13.65, -2.194, 2.091

What do all these fields mean?


Spectral class: F8
Luminosity Class: V
Apparent visual magnitude: +4.81
Absolute visual magnitude: +4.27
Visual luminosity: 1.713 x Sol
Color indices: B-V= +0.52, U-B= -0.01, R-I= +0.16
Mass: 1.16 x Sol
Diameter: 1.105 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.309 A.U.s
Orbital period in CZ: 1.39041 years
Tidal index in CZ: 0.517268
Angular size of star in sky in CZ: 0.449995 degrees

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