NGC 4261

NGC 4261 is an elliptical galaxy located around 100 million light-years away in the constellation Virgo. It was discovered April 13, 1784, by the German-born astronomer William Herschel. The galaxy is a member of its own somewhat meager galaxy group known as the NGC 4261 group, which is part of the Virgo Cluster.

The morphological classification of this galaxy is E2, indicating an elliptical galaxy with a 5:4 ratio between the major and minor axes. The stellar population of the galaxy is old, showing no indications of recent mergers or interactions with other members of its group. Large-scale isophotes of the galaxy are generally boxy in form, with no markers that would suggest a disruptive interaction within the last billion years. There is a dust lane along the north–south axis of the galaxy and a disk of dust around the nucleus.

Two prominent jets emanating from the nucleus can be observed in the radio band. It has an active galactic nucleus with a supermassive black hole at the core with a mass of $2,238 km/s$. The galaxy is estimated to be about 60 thousand light-years across, and a jet emanating from it is estimated to span about 88 thousand light-years.

A Type Ia supernova event in this galaxy was reported on January 1, 2001. It was designated SN 2001A, marking the first supernova discovery of the year. The position of the event was $0$ west and $4.9 solar mass$ north of the galactic nucleus. It reached magnitude 18.4 on December 15 of the previous year.