NGC 3239

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Galaxy
NGC 3239
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NGC 3239 [1] taken with the 81 cm reflecting telescope of the Mount Lemmon Observatory
NGC 3239 imaged with the 81 cm reflecting telescope of the Mount Lemmon Observatory
AladinLite
Constellation lion
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 10 h 25 m 04.9 s
declination + 17 ° 09 ′ 49 ″
Appearance
Morphological type IB (s) m / pec  
Brightness  (visual) 11.1 mag
Brightness  (B-band) 11.7 mag
Angular expansion 4.5 ′ × 2.4 ′
Position angle 81 °
Surface brightness 13.5 mag / arcmin²
Physical data
Affiliation WBL 270  
Redshift 0.002512 ± 0.000010  
Radial velocity (753 ± 3) km / s  
Stroke distance
v rad  / H 0 		(30 ± 2)  x  10 6  ly
(9.1 ± 0.6)  Mpc 
history
discovery William Herschel
Discovery date March 21, 1784
Catalog names
NGC  3239 • UGC  5637 • PGC  30560 • CGCG  094-038 • MCG  + 03-27-025 • IRAS  10224 + 1724 • 2MASX  J10250486 + 1709492 • Arp  263 • VV  95 • GC  2099 • H  IV 10 • h  710 • h 3246 • HIPASS  J1025 + 17 • KPG 236A • LDCE 778 NED001

NGC 3239 = Arp 263 is an irregular galaxy of the Hubble type IBm / P in the constellation Leo on the ecliptic . It is estimated to be 30 million light-years from the Milky Way and about 40,000 light-years across.

In the same area of ​​the sky is u. a. the galaxy IC 607 .

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

The type IIP supernova SN 2012A was observed here.

The object was discovered by Wilhelm Herschel on March 21, 1784 .

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 3239  - 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 3239
  4. ↑ Simbad
  5. ↑ Seligman