NGC 753
Galaxy in the constellation Andromeda
From Wikipedia, the free encyclopedia
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 | |
|---|---|
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 has roughly 2-3 times more mass than the Milky Way[4] and is classified as a radio galaxy.[10][11][12]
Physical characteristics
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]
Supermassive black hole
NGC 753 has a supermassive black hole with an estimated mass of (2.2 ± 0.4) × 107 M☉.[15]
Supernovae
NGC 753 has hosted two supernovae:[16]
