NGC 2980
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| NGC 2980 | |
|---|---|
 NGC 2980 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Sextans |
| Right ascension | 09h 43m 11.9880s[1] |
| Declination | −09° 36′ 44.820″[1] |
| Redshift | 0.019160±0.0000120[1] |
| Heliocentric radial velocity | 5,744±4 km/s[1] |
| Distance | 257.99 ± 9.79 Mly (79.100 ± 3.003 Mpc)[2] |
| Apparent magnitude (V) | 13.6[1] |
| Characteristics | |
| Type | SAB(s)c[1] |
| Size | ~154,600 ly (47.40 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 0.9′[1] |
| Other designations | |
| IRAS 09407-0923, 2MASX J09431196-0936446, MCG -01-25-028, PGC 27799[1] | |
NGC 2980 is an intermediate spiral galaxy in the constellation of Sextans. Its velocity with respect to the cosmic microwave background is 6,088±24 km/s, which corresponds to a Hubble distance of 292.9 ± 20.5 Mly (89.79 ± 6.30 Mpc).[1] However, 12 non-redshift measurements give a closer mean distance of 257.99 ± 9.79 Mly (79.100 ± 3.003 Mpc).[2] It was discovered by German-British astronomer William Herschel on 27 March 1786.[3][4]
NGC 2980 is a Seyfert II galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[5][6]
Two supernovae have been observed in NGC 2980:
- SN 2006ba (Type IIb, mag. 18.4) was discovered by Berto Monard on 19 March 2006.[7][8]
- SN 2009lm (Type II-P, mag. 18.5) was discovered by the Lick Observatory Supernova Search (LOSS) on 17 November 2009.[9][10]
