NGC 3448
| Galaxy NGC 3448 |
|
|---|---|
|
|
| The interacting galaxies NGC 3448 (center) and PGC 32740 (right), SDSS image | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 54 m 39.2 s |
| declination | + 54 ° 18 ′ 17 ″ |
| Appearance | |
| Morphological type | I0 |
| Brightness (visual) | 11.6 mag |
| Brightness (B-band) | 12.5 mag |
| Angular expansion | 5.6 ′ × 1.7 ′ |
| Position angle | 65 ° |
| Surface brightness | 13.9 mag / arcmin² |
| Physical data | |
| Redshift | +0.004503 ± 0.000017 |
| Radial velocity | (+1350 ± 5) km / s |
|
Stroke distance v rad / H 0 |
(63 ± 5) · 10 6 ly (19.3 ± 1.4) Mpc |
| diameter | 50,000 ly |
| history | |
| discovery | William Herschel |
| Discovery date | April 17, 1789 |
| Catalog names | |
| NGC 3448 • UGC 6024 • PGC 32774 • CGCG 267-027 • MCG + 09-18-055 • IRAS 10516 + 5434 • 2MASX J10543923 + 5418188 • Arp 205 • GC 2248 • H I 233 • h 788 • LDCE 0867 NED004 | |
NGC 3448 is an irregular galaxy of Hubble type I B0? in the constellation Great Bear in the north star sky . It has an angular dimension of 5.6 '× 1.7' and an apparent magnitude of 11.6 mag. The galaxy is around 63 million light years away from the Milky Way and has a diameter of around 50,000 light years .
It forms an interactive pair with PGC 32740 known as Arp 205. The entire galaxy complex has an extension of about 150,000 light years. Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of galaxies with matter ejected from the nucleus .
It was discovered on April 17, 1789 by William Herschel .
Web links
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