| NGC 958 | |
| Constellation Name: | Cetus |
| Epoch: | J2000 |
| Type: | SB(rs)c?[1] |
| Dist Ly: | NaNMpc |
| Z: | 0.019150 |
| H Radial V: | 5741 ± 2 km/s |
| Appmag V: | 12.2 |
| Size V: | 2.9' x 0.9' |
| Size: | ~49.43kpc (estimated) |
NGC 958 is a barred spiral galaxy in the constellation of Cetus. Its velocity with respect to the cosmic microwave background is 5505 ± 17 km/s, which corresponds to a Hubble distance of 81.20 ± 5.69 Mpc (∼265 million light-years). However, 19 non-redshift measurements give a distance of 58.93 ± 12.91 Mpc (∼192 million light-years).[2] The galaxy was discovered by German-British astronomer William Herschel on 20 September 1784.[3]
The Simbad database lists NGC 958 as a Seyfert II Galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4] The NASA/IPAC Extragalactic Database (NED) lists NGC 958 as a Luminous infrared galaxy (LIRG).
Three supernovae have been observed in NGC 958: SN 2005A (type Ia, mag. 17.1),[5] SN 2022ao (type Ic, mag. 18),[6] and SN 2022acbu (type II, mag. 20.3).[7]