NGC 753 | |
---|---|
![]() NGC 753 imaged by PanSTARRS | |
Observation data (J2000 epoch) | |
Constellation | Andromeda |
Right ascension | 01h 57m 42.2104s [1] |
Declination | +35° 54′ 58.262″ [1] |
Redshift | 0.016221 [1] |
Heliocentric radial velocity | 4863 km/s [1] |
Distance | 220 Mly (67 Mpc) [2] |
Group or cluster | Abell 262 |
Apparent magnitude (V) | 12.97 [1] |
Characteristics | |
Type | SAB(rs)bc [1] |
Size | ~148,000 ly (45.39 kpc) (estimated) [1] |
Apparent size (V) | 2.5′ × 1.9′ [1] |
Other designations | |
IRAS 01547+3540, UGC 1437, MCG +06-05-066, PGC 7387, CGCG 522-086 [1] |
NGC 753 is a spiral galaxy [1] located 220 million light-years away [2] in the constellation Andromeda. The galaxy was discovered by astronomer by Heinrich d'Arrest on September 16, 1865 [3] and is a member of Abell 262. [4] [5] [6] [7] [8] [9]
NGC 753 has roughly 2-3 times more mass than the Milky Way [4] and is classified as a radio galaxy. [10] [11] [12]
NGC 753 contains two main arms that extend to 180° on either side of the galaxy. [13] [14] From the two main arms, there are three larger and weaker arms that sub-divide into several branches. [13] This open structure of the arms may be due to the influence of NGC 759 which is a close companion of NGC 753 [13] [14] that lies 1.4 Mly (0.44 Mpc ) away. [14]
NGC 753 has a supermassive black hole with an estimated mass of (2.2 ± 0.4) × 107 M☉. [15]
NGC 753 has hosted two supernovae: [16]