NGC 5221

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Galaxy
NGC 5221
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NGC 5221 [1] SDSS
NGC 5221 SDSS
AladinLite
Constellation Virgin
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 13 h 34 m 55.90 s
declination + 13 ° 49 ′ 57.0 ″
Appearance
Morphological type Sb  
Brightness  (visual) 13.4 mag
Brightness  (B-band) 14.2 mag
Angular expansion 1.6 ′ × 0.8 ′
Position angle 104 °
Surface brightness 13.5 mag / arcmin²
Physical data
Redshift 0.023279 ± 0.000027  
Radial velocity 6979 ± 8 km / s  
Stroke distance
v rad  / H 0 		(311 ± 22)  x  10 6  ly
(95.4 ± 6.7)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 12, 1784
Catalog names
NGC  5221 • UGC  8559 • PGC  47869 • CGCG  073-040 • MCG  + 02-35-006 • IRAS  F13324 + 1405 • 2MASX  J13345590 + 1349571 • Arp  288 • VV  315 • VV 315b • GC  3595 • H  III 86 • h  1637 • LDCE 985 NED005 • NVSS J133455 + 134957 • WISEA J133455.90 + 134957.0

NGC 5221 is a 13.4 mag bright spiral galaxy of the Hubble type Sb in the constellation Virgo on the ecliptic, interacting with NGC 5222 . It is an estimated 311 million light years from the Milky Way and about 150,000 light years in diameter. Together with the closely neighboring galaxy NGC 5222, it forms the galaxy pair Arp 288 .

In the same area of ​​the sky are u. a. the galaxies NGC 5226 , NGC 5230 , IC 898 , IC 901 .

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy pair belongs to the class galaxies with wind effects .

The object was discovered on April 12, 1784 by Wilhelm Herschel with an 18.7-inch reflector telescope, which she labeled “Three. The two preceding vF, S, R “described. The other two objects mentioned are NGC 5222 and NGC 5230 .

Web links

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

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e f SEDS : NGC 5221
  4. ↑ Seligman
  5. ↑ Auke Slotegraaf : NGC 5221. Deep Sky Observer's Companion, accessed on July 14, 2015 (English).