HAT-P-28
HAT-P-28 is the primary of a binary star system about 1320 light-years away. It is a G-type main-sequence star. The star's age is older than the Sun's at 6.1 billion years. HAT-P-28 is slightly enriched in heavy elements, having a 130% concentration of iron compared to the Sun. Evolutionary modelling shows it to be right at the end of its main sequence life. The binary star system is suspected to be surrounded by a debris disk with a 6.1″ radius.
The red dwarf stellar companion was detected in 2015 at a projected separation of 0.972″ and confirmed in 2016 to be either bound or co-moving.