NGC 5954

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Galaxy
NGC 5954
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NGC 5953 (r) & NGC 5954 (l) [1] SDSS
NGC 5953 (r) & NGC 5954 (l) SDSS
AladinLite
Constellation Snake
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 15 h 34 m 35.021 s
declination + 15 ° 12 ′ 00.26 ″
Appearance
Morphological type SAB (rs) cd: / pec / Sy2  
Brightness  (visual) 12.2 mag
Brightness  (B-band) 12.9 mag
Angular expansion 1.3 ′ × 0.6 ′
Position angle 5 °
Surface brightness 11.4 mag / arcmin²
Physical data
Affiliation NGC 5962 group
LGG 400  
Redshift 0.006535 ± 0.000010  
Radial velocity (1959 ± 3) km / s  
Stroke distance
v rad  / H 0 		(91 ± 6)  ·  10 6  ly
(27.8 ± 1.9)  Mpc 
history
discovery William Herschel
Discovery date April 17, 1784
Catalog names
NGC  5954 • UGC  9904 • PGC  55482 • CGCG  107-008 • MCG  + 03-40-006 • 2MASX  J15343517 + 1511536 • Arp  91 • VV  244b • GC  4112 • H  II 179 • h  1927 • 2MASS J15343503 + 1512002 • LDCE 1131 NED003 • HOLM 714A • KPG 468B • KTG 62C

NGC 5954 is a bar-spiral galaxy of the Hubble type SBc / P with an active galaxy core in the constellation Snake north of the ecliptic . It is estimated to be 91 million light years from the Milky Way and about 30,000 light years in diameter. Together with NGC 5953 it forms the interacting galaxy pair Arp 91 , KPG 468 or Holm 714 and together with NGC 5951 the galaxy trio KTG 62 . She is considered a member of the NGC 5962 group ( LGG 400 ).

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 large companion of high surface brightness on one arm (Arp catalog) .

The object was discovered on April 17, 1784 by the German-British astronomer Wilhelm Herschel .

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 5954  - collection of images, videos, and audio files

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e f SEDS : NGC 5954
  4. ^ VizieR
  5. ↑ Seligman