Hatena::Groupkanatatmp

OJ 287

OJ 287

OJ 287 is one of the most famous blazars. The object has been occurred the periodic outbursts with a period of 12 years (Sillanpaa et al. 1988). Thus, it is suggested that the object is in a binary black hole system.

RA=08 54 48.875

Dec=+20 06 30.64