NGC 2944
| Galaxy NGC 2944 |
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|---|---|
![NGC 2944 with LEDA 1990710 (lu) & LEDA 27534 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC2944_-_SDSS_DR14.jpg)
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| NGC 2944 with LEDA 1,990,710 (lu) & LEDA 27534 SDSS uptake | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 09 h 39 m 18.2 s |
| declination | + 32 ° 18 ′ 30 ″ |
| Appearance | |
| Morphological type | SB (s) c |
| Brightness (visual) | 14.1 mag |
| Brightness (B-band) | 14.8 mag |
| Angular expansion | 1 ′ × 0.4 ′ |
| Position angle | 95 ° |
| Surface brightness | 13 mag / arcmin² |
| Physical data | |
| Redshift | 0.022676 ± 0.000027 |
| Radial velocity | 6798 ± 8 km / s |
|
Stroke distance v rad / H 0 |
(302 ± 21) · 10 6 ly (92.6 ± 6.5) Mpc |
| history | |
| discovery | Johann Palisa |
| Discovery date | March 27, 1886 |
| Catalog names | |
| NGC 2944 • UGC 5144 • PGC 27533/4 • CGCG 181-078 • MCG + 06-21-067 • IRAS 09363 + 3232 • Arp 63 • VV 82 • USGC U245 NED04 | |
NGC 2944 = Arp 63 is an interacting galaxy trio in the constellation Leo on the ecliptic . The main galaxy is an estimated 302 million light years away from the Milky Way and is approximately 90,000 light years across. At the end of its spiral arms it interacts with the smaller objects PGC 1990710 and PGC 27534 ( Arp 63 ).
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a small companion of high surface brightness on one arm (Arp catalog) .
In the same area of the sky are u. a. the galaxies NGC 2926 and NGC 2964 .
The object was discovered by Johann Palisa on March 27, 1886 .
Web links
Commons : NGC 2944 - 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