NGC 7284
| Galaxy NGC 7284 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Aquarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 22 h 28 m 35.9 s |
| declination | -24 ° 50 ′ 39 ″ |
| Appearance | |
| Morphological type | SB (s) 0 ^ 0 ^ / pec |
| Brightness (visual) | 12.0 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 2.3 ′ × 1.6 ′ |
| Position angle | 133 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.015614 +/- 0.000060 |
| Radial velocity | 4681 +/- 18 km / s |
|
Stroke distance v rad / H 0 |
(212 ± 15) · 10 6 ly (64.9 ± 4.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | October 26, 1785 |
| Catalog names | |
| NGC 7284 • PGC 68950 • ESO 533-031 • MCG -04-53-004 • 2MASX J22283592-2450385 • SGC 222550-2506.0 • Arp 93 NED01 • VV 74b • GC 4792 • H II 469 • h 3943 • LDCE 1516 NED003 | |
NGC 7284 is a lenticular galaxy of the Hubble type SB0 and lies in the constellation Aquarius on the ecliptic . It is an estimated 212 million light years from the Milky Way and about 140,000 light years in diameter . Together with NGC 7285 , it forms the galaxy pair Arp 93 . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with an elliptical companion on one arm (Arp catalog) .
The object was discovered by Wilhelm Herschel on October 26, 1785 .
Web links
Commons : NGC 7284 - collection of images, videos, and audio files
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