NGC 5980
Galaxy in the constellation Serpens
From Wikipedia, the free encyclopedia
NGC 5980 is a spiral galaxy in the constellation of Serpens. Its velocity with respect to the cosmic microwave background is 4,216±10 km/s, which corresponds to a Hubble distance of 202.8 ± 14.2 Mly (62.18 ± 4.36 Mpc).[1] However, five non-redshift measurements give a closer mean distance of 155.90 ± 2.21 Mly (47.800 ± 0.677 Mpc).[2] It was discovered by German-British astronomer William Herschel on 19 March 1787.[3][4]
Right ascension15h 41m 30.4158s[1]
Declination+15° 47′ 15.738″[1]
| NGC 5980 | |
|---|---|
NGC 5980 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Serpens |
| Right ascension | 15h 41m 30.4158s[1] |
| Declination | +15° 47′ 15.738″[1] |
| Redshift | 0.013649±0.0000170[1] |
| Heliocentric radial velocity | 4,092±5 km/s[1] |
| Distance | 155.90 ± 2.21 Mly (47.800 ± 0.677 Mpc)[1] |
| Apparent magnitude (B) | 12.3[1] |
| Characteristics | |
| Type | S[1] |
| Size | ~86,400 ly (26.49 kpc) (estimated)[1] |
| Apparent size (V) | 1.9′ × 0.7′[1] |
| Other designations | |
| HOLM 720A, IRAS 15391+1556, UGC 9974, MCG +03-40-026, PGC 55800, CGCG 107-025[1] | |
Supernovae
Two supernovae have been observed in NGC 5980:
- SN 2004ci (Type II, mag. 17.5) was discovered by the Lick Observatory Supernova Search (LOSS) on 15 June 2004, and independently by Mark Armstrong on 16 June 2004.[5][6]
- SN 2019pqo (Type IIb, mag. 18.6697) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 7 September 2019.[7]
