A BL Lacertae object and variable quasar with a supermassive binary black hole system at its core.
OJ 287 is one of the most studied BL Lac objects in the sky, exhibiting periodic optical outbursts attributed to a binary supermassive black hole system. Details to be updated.
Technical Details
Designation OJ 287
Type BL Lac Object
Magnitude Range 12.0 - 18.0
Period ~12 years