| NGC 2491 | |
| Constellation Name: | Canis Minor |
| Z: | 0.039290 |
| H Radial V: | 18,476 km/s |
| Dist Ly: | 583 Mly (178.74 Mpc) |
| Sbrightness: | 11.75 |
| Ra: | 07h 58m 27.37s |
| Appmag V: | 14.8 |
| Size: | 130,000 ly |
| Type: | S |
| Dec: | +07d 59m 01.74s |
| Names: | PGC 22353, 2MASX J07582739+0759018, SDSS J075827.37+075901.7, CGCG 031-007, 2MASS J07582738+0759019, NPM1G+08.0123, LEDA 22353 |
| Epoch: | J2000 |
| Appmag B: | 15.6 |
| Size V: | 0.3' x 0.2' |
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 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. With a surface brightness of magnitude of 11.75, NGC 2491 is classified as a high surface brightness galaxy.[4]