Tags: Star.
HAT-P-13 also known as GSC 03416-00543 is a G-type main sequence star approximately 700 light-years away in the constellation Ursa Major. In 2009 it was discovered that this star is orbited by two massive planets the innermost of which transits the star. This was the first known example of an extrasolar transiting planet with an additional planet in the same system.