IC 2560

IC 2560 is a spiral galaxy lying over 110 million light-years away from Earth in the constellation of Antlia. It was discovered by Lewis Swift on 28 December 1897.^[4][5]

IC 2560
IC 2560's spiral arms and barred structure imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Antlia
Right ascension	10h 16m 18.666s[1]
Declination	−33° 33′ 49.85″[1]
Redshift	0.0096[1]
Heliocentric radial velocity	2864 km/s[1]
Distance	110 million ly[2]
Apparent magnitude (V)	13.31[1]
Apparent magnitude (B)	12.53[1]
Characteristics
Type	(R')SB(r)b?[3]
Size	~149,000 ly (45.69 kpc) (estimated)[3]
Apparent size (V)	3.2′ × 2.0′[3]
Other designations
ESO 375- G 004, IRAS 10140-3318, 2MASX J10161866-3333498, MCG -05-25-001, PGC 29993[3]

The luminosity class of IC 2560 is II^[6] with a broad HI line^[7] containing regions of ionized hydrogen. Moreover, IC 2560 is an active Type 2 Seyfert Galaxy.^[8] It has a distinct bar structure in the center with the supermassive black hole at the core having a mass of 4.4+4.4
−2.2×10⁶ M_☉.^[9]

One supernova has been observed in IC 2560. SN 2020ejm (type Ia, mag. 16) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 11 March 2020.^[10]

NGC 3223 group

IC 2560 is a member of the NGC 3223 Group. There are 15 other galaxies in the group including NGC 3223, NGC 3224, NGC 3258, NGC 3268, NGC 3289, IC 2552 and IC 2559.^[11] Together, the group is part of the Antlia Cluster.^[12]