NGC 4016
| Galaxy NGC 4016 |
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![NGC 4016 [1] SDSS image of NGC 4016](https://de.wikipedia.org/wiki/Datei:NGC4016_-_SDSS_DR14.jpg)
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| NGC 4016 SDSS image of NGC 4016 | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 58 m 29.020 s |
| declination | + 27 ° 31 ′ 43.62 ″ |
| Appearance | |
| Morphological type | SBdm: |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.5 ′ × 0.8 ′ |
| Position angle | 175 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4017 group LGG 262 |
| Redshift | 0.011469 ± 0.000005 |
| Radial velocity | 3438 ± 1 km / s |
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Stroke distance v rad / H 0 |
(153 ± 11) · 10 6 ly (46.9 ± 3.3) Mpc |
| history | |
| discovery | RJ Mitchell |
| Discovery date | March 30, 1854 |
| Catalog names | |
| NGC 4016 • UGC 6954 • PGC 37687 • CGCG 157-068 • MCG + 05-28-063 • KUG 1155 + 278 • 2MASX J11582910 + 2731431 • Arp 305 NED01 • NVSS J115828 + 273144 | |
NGC 4016 is a bar-spiral galaxy of the Hubble type SBdm: in the constellation Coma Berenices in the northern sky . It is estimated to be 153 million light years from the Milky Way and about 70,000 light years in diameter. Together with the galaxy NGC 4017 it forms the galaxy pair Arp 305 and it is a member of the NGC 4017 group ( LGG 262 ).
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This pair of galaxies belongs to the class Unclassified double galaxies .
In the same area of the sky are u. a. the galaxies NGC 3988 , NGC 4004 , NGC 4008 , IC 2982 .
The type II supernova SN 2002hm was observed here.
The object was discovered on March 30, 1854 by RJ Mitchell , an assistant to William Parsons .
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