| NGC 665 | |
| Epoch: | J2000 |
| Constellation Name: | Pisces |
| Z: | 0.018079±0.000103 |
| Dist Ly: | 236 Mly (72.3 Mpc) |
| Appmag V: | 12.2 |
| Type: | (R)S0^0 |
| Size: | 100,000 ly |
| Size V: | 1.8 x 1.0 |
| Notes: | Small halo of gas visible at galactic center |
| Names: | UGC 1223, PGC 6415, MCG+02-05-019 |
NGC 665 is a Lenticular galaxy 236 million light-years away in the constellation Pisces.[1] NGC 665 was discovered in 1786 by William Herschel, and is 100,000 light-years across. In the center of NGC 665, a small halo of dust and gas can be seen, indicating some small star-forming regions. NGC 665 is not known to have an active galactic nuclei, as seen in the SDSS image.[2]
Like other galaxies, NGC 665 has a satellite galaxy (MCG 02-05-022),[3] a dwarf elliptical galaxy, as seen in the SDSS image of NGC 665. Its nearby cluster of stars is NGC 663.