NGC 838
| Galaxy NGC 838 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | whale |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 09 m 38.5 s |
| declination | -10 ° 08 ′ 48 ″ |
| Appearance | |
| Morphological type | SA (rs) 0 ^ 0 / Sbrst / LINER |
| Brightness (visual) | 13.0 likes |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 1.2 ′ × 0.9 ′ |
| Position angle | 85 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation | HCG 16 LGG 49 |
| Redshift | 0.012844 ± 0.000004 |
| Radial velocity | 3851 ± 1 km / s |
|
Stroke distance v rad / H 0 |
(172 ± 12) · 10 6 ly (52.8 ± 3.7) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | November 28, 1785 |
| Catalog names | |
| NGC 838 • PGC 8250 • MCG -02-06-033 • IRAS 02071-1023 • KUG 0207-103 • 2MASX J02093853-1008466 • Arp 318 • HCG 16C • Mrk 1022 • GC 498 • H II 484 • h 201/2465 • GALEX ASC J020938.50-100846.7 • LDCE 146 NED003 | |
NGC 833 is an active , lens-shaped galaxy with a high rate of star formation of the Hubble type S0 in the constellation Cetus south of the celestial equator . It is an estimated 178 million light-years from the Milky Way and about 80,000 light-years across.
NGC 838 together with NGC 833 , NGC 835 and NGC 839 form a group of galaxies , which is cataloged as Hickson Compact Group 16 ( Arp 318 ).
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This group of galaxies belongs to the class of galaxies .
The Type II supernova SN 2005H was observed here.
The object was discovered by William Herschel on November 28, 1785 .
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
Web links
Commons : NGC 838 - collection of images, videos, and audio files
Individual evidence
- ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f SEDS : NGC 838
- ^ VizieR
- ↑ Simbad
- ↑ Seligman ( Memento of the original from November 19, 2017 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
