NGC 2523
| Galaxy NGC 2523 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | giraffe |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 08 h 15 m 00.1 s |
| declination | + 73 ° 34 ′ 44 ″ |
| Appearance | |
| Morphological type | SB (r) bc |
| Brightness (visual) | 11.8 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 2.9 ′ × 1.8 ′ |
| Position angle | 57 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 154 |
| Redshift | 0.011578 ± 0.000040 |
| Radial velocity | (3471 ± 12) km / s |
|
Stroke distance v rad / H 0 |
(160 ± 11) · 10 6 ly (49.2 ± 3.4) Mpc |
| history | |
| discovery | Lewis A. Swift |
| Discovery date | September 7, 1885 |
| Catalog names | |
| NGC 2523 • UGC 04271 • PGC 23128 • CGCG 331-032 • MCG + 12-08-031 • IRAS 08092 + 7343 • 2MASX J08150007 + 7334442 • Arp 9 • GC 5409 • LDCE 0573 NED010 | |
NGC 2523 is a bar-spiral galaxy of the Hubble type SBbc in the constellation Camelopardalis in the northern sky . It is about 160 million light years away from the Milky Way and has a diameter of about 135,000 ly.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with split arms (Arp catalog) .
The object was discovered on September 7, 1885 by the American astronomer Lewis A. Swift .
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