NGC 5548 [SEP] constellation
NGC 5548
NGC 5548 is a Type I Seyfert galaxy with a bright, active nucleus. This activity is caused by matter flowing onto a 65 million solar mass () supermassive black hole at the core. Morphologically, this is an unbarred lenticular galaxy with tightly-wound spiral arms, while shell and tidal tail features suggest that it has undergone a cosmologically-recent merger or interaction event. NGC 5548 is approximately 245 million light years away and appears in the constellation Boötes. The apparent visual magnitude of NGC 5548 is approximately
seen in infrared.
- NGC 4945, a galaxy relatively close to Centaurus A.
- NGC 5033, has a Seyfert nucleus displaced from its kinematic center.
- NGC 5548, an example of a lenticular Seyfert galaxy
- NGC 6240, also classified as an ultraluminous infrared galaxy (ULIRG)
- NGC 6251, the X-ray brightest low-excitation radio galaxy in the 3CRR catalog
- NGC 7479, a spiral galaxy with arms opening in a direction opposite to the optical arms
- IC 2560