IC 4271

IC 4271 is a spiral galaxy located some 800 million light-years away in the Canes Venatici constellation.^[1] It is 157,000 light-years in diameter.^[2] IC 4271 was first located on July 10, 1896, by Stephane Javelle, a French astronomer.^[2] It hosts a Seyfert type 2 nucleus, containing an acceleration disc around its supermassive black hole which releases large amounts of radiation, hence its bright appearance.^[3][4] IC 4271 appears to be interacting with its smaller neighboring galaxy, PGC 3096774.^[2][5][6]

IC 4271
IC 4271 captured by Hubble
Observation data (J2000 epoch)
Constellation	Canes Venatici
Right ascension	13h 29m 21.40s
Declination	+37d 24m 42.0s
Redshift	0.057000
Heliocentric radial velocity	16,625 km/s
Distance	800 Mly (245.3 Mpc)
Apparent magnitude (V)	15 (15.3)
Apparent magnitude (B)	15.8 (16.3)
Surface brightness	13.3 (12.5)
Characteristics
Type	SBab? pec + Sc?
Size	157,000 ly (48.16 kpc)
Apparent size (V)	0.8' x 0.5'
Other designations
PGC 47334, Arp 40, NVSS J132921+372447, MCG +06-30-15, Z 190-12, VV 355

Both galaxies form Arp 40.^[7][8] In the Atlas of Peculiar Galaxies created by Halton Arp, they fall under spiral galaxies that have companions with low-surface-brightness.