NGC 1954
Galaxy in the constellation Lepus
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NGC 1954 is a large spiral galaxy in the constellation of Lepus. Its velocity with respect to the cosmic microwave background is 3,172 ± 4 km/s, which corresponds to a Hubble distance of 46.8 ± 3.3 Mpc Mpc (~153 million light-years).[1] It was discovered by German-British astronomer William Herschel on 14 December 1786.[2]
Right ascension05h 32m 48.3509s[1]
Declination−14° 03′ 45.625″[1]
| NGC 1954 | |
|---|---|
NGC 1954 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Lepus |
| Right ascension | 05h 32m 48.3509s[1] |
| Declination | −14° 03′ 45.625″[1] |
| Redshift | 0.010437[1] |
| Heliocentric radial velocity | 3129 ± 2 km/s[1] |
| Distance | 152.6 ± 10.7 Mly (46.79 ± 3.28 Mpc)[1] |
| Apparent magnitude (V) | 11.8[1] |
| Characteristics | |
| Type | SA(rs)bc pec?[1] |
| Size | ~192,000 ly (58.87 kpc) (estimated)[1] |
| Apparent size (V) | 4.2′ × 2.0′[1] |
| Other designations | |
| IRAS 05305-1405, 2MASX J05324835-1403460, MCG -02-15-003, PGC 17422[1] | |
The galaxy features two thin arcs which contain HII regions.[3] The galaxy forms a pair with NGC 1957, which lies 5.1 arcminutes away.[4] Other nearby galaxies include IC 2132, MCG -02-14-016, and MCG -03-15-006.[5]
Supernovae
Three supernovae have been observed in NGC 1954:
- SN 2010ko (Type Ia, mag. 16.8) was discovered by Simone Leonini on 5 December 2010.[6][7]
- SN 2011fi (Type II, mag. 17.8), was discovered by Kōichi Itagaki on 27 August 2011.[8][9]
- SN 2013ex (Type Ia, mag. 15.6) was discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN) on 19 August 2013.[10][11]
