NGC 3254
Spiral galaxy in the constellation Leo Minor
From Wikipedia, the free encyclopedia
NGC 3254 is a spiral galaxy in the constellation Leo Minor. It was discovered by German-British astronomer William Herschel on March 13, 1785.[4] It is a member of the NGC 3254 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.[5]
Right ascension10h 29m 19.922s[1]
Declination+29° 29′ 29.18″[1]
| NGC 3254 | |
|---|---|
SDSS image of NGC 3254 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo Minor |
| Right ascension | 10h 29m 19.922s[1] |
| Declination | +29° 29′ 29.18″[1] |
| Redshift | 0.004556[2] |
| Heliocentric radial velocity | 1363 ± 10 km/s[2] |
| Apparent magnitude (V) | 11.60[2] |
| Apparent magnitude (B) | 12.29[2] |
| Characteristics | |
| Type | SA(s)bc[3] |
| Size | ~175,000 ly (53.65 kpc) (estimated)[3] |
| Apparent size (V) | 5.10′ × 0.90′[3] |
| Other designations | |
| IRAS F10265+2944, UGC 5685, MCG +05-25-018, PGC 30895, CGCG 154-020[2] | |
Supernovae
Two supernovae have been observed in NGC 3254:
- SN 1941B (type unknown, mag. 15.1) was discovered by Josef J. Johnson on 25 March 1941.[6][7][8] [Note: some sources incorrectly list the discovery date as 28 March 1941.]
- SN 2019np (Type Ia, mag. 13.0) was discovered by Kōichi Itagaki on 9 January 2019.[9] This supernova was the brightest observed in the year 2019.[10]
Gallery
NGC 3254 imaged by the Hubble Space Telescope[11]
