NGC 2491

NGC 2491 is a spiral galaxy located in Canis Minor constellation.^[1] It is located 580 million light-years from Earth and has an approximate diameter of 130,000 light-years.^[2]

NGC 2491
Sloan Digital Sky Survey of NGC 2491
Observation data (J2000 epoch)
Constellation	Canis Minor
Right ascension	07h 58m 27.37s
Declination	+07d 59m 01.74s
Redshift	0.039290
Heliocentric radial velocity	18,476 km/s
Distance	583 Mly (178.74 Mpc)
Apparent magnitude (V)	14.8
Apparent magnitude (B)	15.6
Surface brightness	11.75
Characteristics
Type	S
Size	130,000 ly
Apparent size (V)	0.3' x 0.2'
Other designations
PGC 22353, 2MASX J07582739+0759018, SDSS J075827.37+075901.7, CGCG 031-007, 2MASS J07582738+0759019, NPM1G+08.0123, LEDA 22353

Details

NGC 2491 was discovered by American astronomer Lewis Swift on November 15, 1885.^[3] Swift described it as extremely faint, small, with a round irregular shape, and a bright star to the west.^[3] With a surface brightness of magnitude of 11.75, NGC 2491 is classified as a high surface brightness galaxy.^[4]