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NGC 753

Galaxy in the constellation Andromeda

NGC 753
PanSTARRS image of NGC 753.
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	01h57m 42.2s[1]
Declination	35° 54′ 58″[1]
Redshift	0.016355[1]
Heliocentric radial velocity	4903 km/s[1]
Distance	220 Mly (67 Mpc)[2]
Grouporcluster	Abell 262
Apparent magnitude (V)	12.97[1]
Characteristics
Type	SAB(rs)bc[1]
Size	~150,000 ly (46 kpc) (estimated)[1]
Apparent size (V)	2.5 x 1.9[1]
Other designations
MCG 6-5-66, PGC 7387, UGC 1437[1]

NGC 753 is a spiral galaxy^[3] 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^[4] and is a member of Abell 262.^{[5][6][7][8][9][10]}

NGC 753 has roughly 2-3 times more mass than the Milky Way^[5] and is classified as a radio galaxy.^[11][12][13]

Physical characteristics[edit]

NGC 753 contains two main arms that extend to 180° on either side of the galaxy.^[14][15] From the two main arms, there are three larger and weaker arms that sub-divide into several branches.^[14] This open structure of the arms may be due to the influence of NGC 759 which is a close companion of NGC 753^[14][15] that lies 1.4 Mly (0.44 Mpc) away.^[15]

Supermassive black hole[edit]

NGC 753 has a supermassive black hole with an estimated mass of (2.2 ± 0.4) × 10⁷ M☉.^[16]

Supernovae[edit]

NGC 753 has hosted two supernovae,^[17] SN 1954E which was discovered by Fritz Zwicky^[18][19] on September 26, 1954^{[18][19][17][20]} and AT 2018ddf which was discovered on July 5, 2018.^[17][21][22] Both supernovae were of unknown types.^{[17][19][21][20][22]}

See also[edit]

• List of NGC objects (1–1000)

References[edit]

External links[edit]

Wikimedia Commons has media related to NGC 753.

• NGC 753 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images