NGC 4496
| Galaxy NGC 4496 |
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|---|---|
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| The galaxy NGC 4496 or NGC 4496A (above) and the galaxy NGC 4496B (below) recorded with the Hubble space telescope . | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 31 m 40.0 s |
| declination | + 03 ° 55 ′ 58 ″ |
| Appearance | |
| Morphological type | A: SB (rs) m / HII B: IB (s) m |
| Brightness (visual) | A: 11.2 mag B: 13.9 mag |
| Brightness (B-band) | A: 11.9 mag B: 14.5 mag |
| Angular expansion | A: 3.9 / 3.1 B: 0.8 / 0.6 |
| Position angle | A: 70 ° B: 102 ° |
| Surface brightness | A: 13.8 mag / arcmin² B: 13.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.005774 +/- 0.000255 |
| Radial velocity | 1731 +/- 76 km / s |
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Stroke distance v rad / H 0 |
(74 ± 5) · 10 6 ly (22.6 ± 1.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 23, 1784 |
| Catalog names | |
| NGC 4496, 4505 • UGC 7668 • PGC 41471 • CGCG 042-144 • MCG + 01-32-090 • IRAS 12291 + 0412 • VCC 1375 • VV 76 • GC 3045/3055 • H II 36 / III 18 • h 1309 / 1315 • KCPG 343A | |
NGC 4496 = NGC 4505 is a pair of galaxies in the constellation Virgo listed in the New General Catalog . For better differentiation, the two galaxies are also designated NGC 4496A ( barred spiral galaxy of the Hubble type SBc) and NGC 4496B (irregular galaxy of the Hubble type IBm), as they differ significantly in their distance (74 million light years and 199 million light years respectively ). The terms NGC 4496 and NGC 4496A are used synonymously.
The pair of galaxies was discovered in 1784 by the astronomer William Herschel using his 18.7 inch mirror telescope.