Rho Coronae Borealis

light-years
Proper names: Rho Coronae Borealis, 15 Coronae Borealis
Catalog numbers:
     Gliese (Gl) 606.2, Henry Draper (HD) 143761, Bonner Durchmusterung (BD) +33°2663, Luyten Half-Second (LHS) 3145, Hipparcos Input Catalog (HIC) 78459, Smithsonian Astrophysical Observatory (SAO) 65024, Hoffleit Bright Star (HR) 5968, Woolley (Wo) 9537
Age: 3200 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 68% of Sol
Standard error in heavy element abundance: 3%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: singular
Right Ascension and Declination: 16h1m2.72s, +33°18'12.9" (epoch 2000.0)
Distance from Sol: 56.8 light-years (17.4 parsecs)
Standard error in distance: 1.2222%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -23.6, -41.3, 31.2
Galactic (X,Y,Z) coordinates in ly: 22.5, 30.2, 42.6
Proper motion: 0.798 arcsec/yr (194.8° from north)
Radial Velocity: 18.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 54.4, -35.7, 21.2

What do all these fields mean?


Spectral class: G0
Luminosity Class: V
Apparent visual magnitude: +5.42
Absolute visual magnitude: +4.21
Visual luminosity: 1.80 x Sol
Color indices: B-V= +0.60, U-B= +0.08
Diameter: 1.35 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.34 A.U.s
Angular size of star in sky in CZ: 0.535611 degrees
Detected companions: 1
Companion b:
     Mass: 1.55 x Jupiter
     Standard error in mass: 9.677%
     Source for mass: Trilling et al. (1999)
     Period: 39.65 days
     Standard Error in period: 0.222%
     Semimajor Axis: 0.23 A.U.s
     Eccentricity: 0.028
     Periastron distance: 0.22356 A.U.s
     Apastron distance: 0.23644 A.U.s
     Source for orbit data: Noyes et al. (1997)

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