Procyon A

The Procyon System is located about 11.4 light-years from our Sun, Sol. Procyon A, or Alpha Canis Minoris A, is the brightest and most easily located naked-eye star of the Constellation Canis Minor (the Smaller Dog). Procyon is also the upper left member of the "Winter Triangle", whose other components are Sirius (Alpha Canis Minoris) at lower left and Betelgeuse (Alpha Orionis) at right center.
(http://www.astro.uiuc.edu/projects/sow/procyon.html)
Procyon A has a close companion star B, which make up a binary star system. Procyon A and B may be separated on average by a semi-major axis o…