NGC 454
| Galaxy NGC 454 |
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|---|---|
.jpg) |
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| Photo of the Hubble Space Telescope ; left the elliptical, eastern component ( NGC 454E ), right the irregular, western component ( NGC 454W ) | |
| AladinLite | |
| Constellation | Phoenix |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 01 h 14 m 22.5 s |
| declination | -55 ° 23 ′ 55 ″ |
| Appearance | |
| Morphological type | W: Irr E: Irr / Sy2 |
| Brightness (visual) | W: 12.2 mag E: 13.7 mag |
| Brightness (B-band) | W: 13.1 mag E: 14.5 mag |
| Angular expansion | W: 1.7 / 1.5 E: 1.0 / 0.5 |
| Position angle | W: 15 ° E: 90 ° |
| Surface brightness | W: 13.1 mag / arcmin² E: 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.012158 |
| Radial velocity | 3645 km / s |
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Stroke distance v rad / H 0 |
(158 ± 11) · 10 6 ly (48.5 ± 3.4) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | October 5, 1834 |
| Catalog names | |
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NGC 454 • ESO 151-IG 036 • NGC 454 • AM 0112-554 • ESO 151-G036 • IRAS F01123-5539 • SGC 011220-5539.7 • h 2397 • GC 253 |
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NGC 454 is an interacting pair of galaxies in the constellation Phoenix , which is approximately 158 million light years from the Milky Way. The pair consists of an elliptical galaxy (eastern component, NGC 454E ) and an irregular galaxy that could possibly also be a disk galaxy (western component, NGC 454W ).
The object was discovered by John Herschel on October 5, 1834 .
literature
- M. Stiavelli et al .: WFPC2 Observations of NGC 454: An Interacting Pair of Galaxies. In: The Astrophysical Journal Letters , Volume 492, No. 2, January 10, 1998, pp. L135-L138, doi: 10.1086 / 311115
Web links
Commons : NGC 454 - collection of images, videos, and audio files
