NGC 4618

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Galaxy
NGC 4618 / IC 3667
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Image taken with the Hubble Space Telescope
Image taken with the Hubble Space Telescope
AladinLite
Constellation Hunting dogs
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 12 h 41 m 32.8 s
declination + 41 ° 09 ′ 03 ″
Appearance
Morphological type SB (rs) m / HII  
Brightness  (visual) 10.6 mag
Brightness  (B-band) 11.2 mag
Angular expansion 4.2 ′ × 3.4 ′
Position angle 25 °
Surface brightness 13.3 mag / arcmin²
Physical data
Affiliation Messier 106 group
Virgo superclusters
CVn II group
LGG 290  
Redshift 0.001815 ± 0.000003  
Radial velocity (544 ± 1) km / s  
Stroke distance
v rad  / H 0 		(26 ± 2)  x  10 6  ly
(8.12 ± 0.57)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 9, 1787
Catalog names
NGC  4618 • IC  3667 • UGC  7853 • PGC  42575 • CGCG  216-017 • MCG  + 07-26-37 • KUG  1239 + 414 • Arp  23 • VV  73 • GC  3151 and 3152 • H  I 178 and I 179 • h  1385 • KCPG 349A • spar 438A; • LDCE 867 NED122

NGC 4618 = IC 3667 = Arp 23 is a bar-spiral galaxy of the Hubble-type SBm in the constellation Hounds in the northern sky . It is estimated to be 26 million light years from the Milky Way and around 30,000 light years across. Together with NGC 4625 , it forms the interacting galaxy pair Holm 438 or KPG 349 . In the same area of ​​the sky are u. a. the galaxies NGC 4655 , IC 3713 , IC 3723 , IC 3726 .

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of one -armed spiral galaxies (Arp catalog) .

IC 3668 and IC 3669 each describe H-II regions and large star associations in this galaxy, which the astronomer Max Wolf discovered on March 21, 1903 and which received an entry in the index catalog .

  • The galaxies NGC 4618 and NGC 4625 imaged by GALEX in ultraviolet light.

The object was discovered on April 9, 1787 by the German-British astronomer Wilhelm Herschel .

Web links

Commons : NGC 4618  - collection of images, videos, and audio files

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS : NGC 4618
  3. ^ VizieR
  4. ↑ Seligman (IC)
  5. ↑ Seligman (NGC)