NGC 2445
| Galaxy NGC 2445 |
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|---|---|
![NGC 2444 & NGC 2445 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC2445_-_SDSS_DR14.jpg)
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| NGC 2444 & NGC 2445 SDSS image | |
| AladinLite | |
| Constellation | lynx |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 07 h 46 m 55.1 s |
| declination | + 39 ° 00 ′ 55 ″ |
| Appearance | |
| Morphological type | Im pec (ring B) |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.7 ′ × 1.3 ′ |
| Position angle | 18 ° |
| Surface brightness | 13.6 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 148 |
| Redshift | 0.013349 ± 0.000027 |
| Radial velocity | 4002 ± 8 km / s |
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Stroke distance v rad / H 0 |
(178 ± 12) · 10 6 ly (54.7 ± 3.8) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | January 18, 1877 |
| Catalog names | |
| NGC 2445 • UGC 4017 • PGC 21776 • CGCG 206-024 • MCG + 07-16-17 • 2MASX J07465510 + 3900549 • Arp 143 • VV 117 • | |
NGC 2445 is an irregular galaxy of Hubble type in the constellation Lynx at the northern sky . It is an estimated 178 million light years from the Milky Way and about 90,000 light years in diameter. Together with NGC 2444, the interacting galaxy pair Arp 143 .
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 by Édouard Stephan on January 18, 1877 .
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