16 Cygni system
16 Cygni (abbreviated 16 Cyg) is a triple star system consisting of two yellow dwarf stars and a red dwarf.
Stars A and C form a close binary with a projected separation of 73 AU. At a distance of 860 AU from A is a third component designated B with an orbital period of at least 18,000 years.
The 16 Cygni system is likely to be around 10,000 million years old.
Secondary: 16 Cygni B