IC 1181

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Galaxy
IC 1181
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IC 1181 (below) & IC 1178 with LEDA 1536659 (r), [1] SDSS image
IC 1181 (below) & IC 1178 with LEDA 1536659 (r), SDSS image
AladinLite
Constellation Hercules
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 16 h 05 m 33.8 s
declination + 17 ° 35 ′ 37 ″
Appearance
Morphological type SAB (rs) 0 / a  
Brightness  (visual) 15.0 mag
Brightness  (B-band) 15.9 mag
Angular expansion 0.8 ′ × 0.4 ′
Position angle 70 °
Surface brightness 13.6 mag / arcmin²
Physical data
Affiliation Abell 2151  
Redshift 0.033066 ± 0.000047  
Radial velocity 9913 ± 14 km / s  
Stroke distance
v rad  / H 0 		(447 ± 31)  ·  10 6  ly
(137.1 ± 9.6)  Mpc 
history
discovery Lewis Swift
Discovery date June 3, 1888
Catalog names
IC  1181 • UGC  10189 • PGC  057063 • CGCG  108-120S • MCG  + 03-41-098 • 2MASX  J16053387 + 1735368 • Arp  172 • VV  194b •

IC 1181 is a lenticular galaxy of the Hubble type SB0 / a in the constellation Hercules in the northern sky . It is an estimated 447 million light-years away from the Milky Way and about 135,000 light-years across. The galaxy is considered a member of the Hercules galaxy cluster Abell 2151 and together with IC 1178 forms the interacting galaxy pair Arp 172 .

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class galaxies with diffuse opposing arms .

In the same area of ​​the sky are u. a. the galaxies NGC 6047 , NGC 6050 , IC 1183 , IC 1185 .

The Type Ia supernova SN 2008ek was observed here.

The object was discovered by Lewis Swift on June 3, 1888 .

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

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : IC 1181
  4. ↑ Simbad
  5. ↑ Seligman