Messier 58 has a low-luminosity active galactic nucleus, where a starburst may be present as well as a supermassive black hole with a mass of around 70 million solar masses.
Messier 58 memiliki inti aktif galaksi dengan luminositas rendah, di mana terdapat ledakan bintang serta lubang hitam supermasif dengan massa sekitar 70 juta massa Matahari.