Tags: Galaxy.
4C +37.11 or Galaxy 0402+379 is a radio galaxy and elliptical galaxy featuring binary supermassive black holes with the least separation of any directly observed binaries as of 2006. The separation between the two is 24 light-years or 7.3 parsecs with an orbital period of 150000 years.The previous directly observed least separation of supermassive binary black holes was 2400 light-years.