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Based on information from Simbad, QQ Boo is an eclipsing variable at ICRS coordinates 15 32 04.8205703705 +45 34 07.427803308. Given the bibliography for this object, it was apparently discovered in 2006. Based on the first article in the list, QQ Boo can also be named GSC 3483-01409 and has a period of 0.27648 days. At the same link, you can also ...

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Go to the exoplanets.org database. Top left hand dropdown menu - select "Stars" You get a table listing all the known stars with exoplanets. Click on the big plus sign in the top right hand of the table and select "Binary Flag" This will now show a boolean flag that indicates if the star is known to be part of a binary (or multiple) system. In the ...

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Distances ($a$) between binary stars vary wildly, from the order of the radius of the stars, to more than a light-year! The plot below (from here) shows a compilation of several surveys, with the color indicating the method by which they've been detected. Separations are roughly normally distributed in $\log a$, peaking at a typical separation of tens of AU....

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