NGC 7393
| Galaxy NGC 7393 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Aquarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 22 h 51 m 38.1 s |
| declination | -05 ° 33 ′ 26 ″ |
| Appearance | |
| Morphological type | SB (rs) c / pec / HII |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.6 mag |
| Angular expansion | 2.0 'x 0.9' |
| Position angle | 88 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | isolated |
| Redshift | 0.012555 ± 0.000027 |
| Radial velocity | (3764 ± 8) km / s |
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Stroke distance v rad / H 0 |
(174 ± 12) · 10 6 ly (53.2 ± 3.7) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | October 5, 1785 |
| Catalog names | |
| NGC 7393 • PGC 69874 • MCG -01-58-002 • 2MASX J22513809-0533262 • Arp 15 • VV 68 • GC 4851 • H II 453 • h 2187 • HIPASS J2251-05 • 2MIG 3091 | |
NGC 7393 = Arp 15 is a bar-spiral galaxy with extensive star formation regions of the Hubble type SBc in the constellation Aquarius on the ecliptic . It is an estimated 174 million light-years away from the Milky Way and about 100,000 light-years across.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with separated sections (Arp catalog) .
The object was discovered by Wilhelm Herschel on October 5, 1785 .
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 7393 - collection of images, videos, and audio files
