NGC 275
| Galaxy NGC 275 |
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|---|---|
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| SDSS image of NGC 275 (bottom left) and NGC 274 (top right) | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 51 m 04.2 s |
| declination | -07 ° 04 ′ 00 ″ |
| Appearance | |
| Morphological type | SB (rs) cd / pec |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 1.5 ′ × 1.2 ′ |
| Position angle | 126 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 337 group LGG 15 |
| Redshift | 0.005817 ± 0.000014 |
| Radial velocity | 1744 ± 4 km / s |
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Stroke distance v rad / H 0 |
(81 ± 6) · 10 6 ly (24.7 ± 1.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | October 9, 1828 |
| Catalog names | |
| NGC 275 • PGC 2984 • MCG -01-03-022 • IRAS 00485-0720 • Arp 140 • VV 81b • GC 157 • h 70 • NVSS J005104-070400 • USGC S030 NED02 • HOLM 26A | |
NGC 275 is a bar-spiral galaxy of the Hubble type SBcd / P in the constellation Whale south of the ecliptic. It is an estimated 81 million light years away from the Milky Way and about 35,000 light years in diameter. Together with NGC 274 , it forms the interacting galaxy pair Arp 140 or Holm 26 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of elliptical galaxies with emanating material (Arp catalog) .
The object was discovered on October 9, 1828 by the British astronomer John Herschel .
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide " , Richmond 2006, ISBN 978-0-943396-76-7
Web links
Commons : NGC 275 - collection of images, videos, and audio files
Individual evidence