NGC 753
Galaxy in the constellation Andromeda
NGC 753 is a spiral galaxy located 220 million light-years away in the constellation Andromeda. The galaxy was discovered by astronomer by Heinrich d'Arrest on September 16, 1865 and is a member of Abell 262.
NGC 753 has roughly 2-3 times more mass than the Milky Way and is classified as a radio galaxy.
01Physical characteristics
NGC 753 contains two main arms that extend to 180° on either side of the galaxy. From the two main arms, there are three larger and weaker arms that sub-divide into several branches. This open structure of the arms may be due to the influence of NGC 759 which is a close companion of NGC 753 that lies 1.4 Mly (0.44 Mpc) away.
02Supermassive black hole
NGC 753 has a supermassive black hole with an estimated mass of (2.2 ± 0.4) × 107 M☉.
03Supernovae
NGC 753 has hosted two supernovae:
- SN 1954E (type unknown, mag. 18.5) was discovered by Fritz Zwicky on 26 September 1954.
- SN 2025mbr (Type Ia, mag. 17.3695) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 25 May 2025.
Sources and credits
This article is adapted from the Wikipedia article “NGC 753”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- NGC 753 PanS.jpg by Donald Pelletier, CC BY-SA 4.0
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