How many exoplanets have been found around binary stars? This XKCD whatif talks about circumbinary and [the other kind of] exoplanets. How many such exoplanets have actually been discovered?


I tried to look it up at exoplanets.org, but didn't find a column mentioning if the star is a binary.
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 FILTER window at the top of the page, just type "BINARY" and the table will just show binary stars.

It is possible to export the table as a csv file using the "export" button at the top right. Counting the number of lines with the BINARY flag indicates that as of December 2019, there are 511 known exoplanets around binary stars.