NGC 2444
| Galaxy NGC 2444 |
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|---|---|
![NGC 2444 & NGC 2445 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC2444_-_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 53.0 s |
| declination | + 39 ° 01 ′ 55 ″ |
| Appearance | |
| Morphological type | S0 pec (ring A) |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.6 ′ × 0.9 ′ |
| Position angle | 27 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 148 |
| Redshift | 0.013503 ± 0.000057 |
| Radial velocity | 4048 ± 17 km / s |
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Stroke distance v rad / H 0 |
(181 ± 13) · 10 6 ly (55.4 ± 3.9) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | January 18, 1877 |
| Catalog names | |
| NGC 2444 • UGC 4016 • PGC 21774 • CGCG 206-024 • MCG + 07-16-16 • 2MASX J07465304 + 3901549 • Arp 143 • VV 117 • | |
NGC 2444 is a lenticular galaxy of the Hubble type S0 in the constellation Lynx in the northern sky . It is an estimated 181 million light years from the Milky Way and about 85,000 light years in diameter. Together with NGC 2445 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